Ruby Array Exercises

In this coding exercise, we walk through how to map array data in Ruby, and specifically how we can build a method that takes in an unlimited number of arrays by leveraging the splat operator. Returns a new array. Basically, it is the set of integers from a to b, sequentially. first_duplicate instead. …In its simplest form,…an array just contains a linear set of values,…which is often called a one-dimensional. And that will print out the contents of the array onto the screen. How to calculate diameter, circumference and area of a circle whose radius is given by user in C programming. Type in some expression, and the result gets returned immediately. 3pcs Booty Resistance Bands Set Loop Hip Booty Legs Exercise,Moderate Price. This exercise is all about arrays and accessing them. Like most languages Ruby allows you to create Arrays to hold multiple values. You can also convert an array to a string, transform one array of data into another, and roll up an array into a single value. Recently I've been working on adding more exercises to DevMemo. In Ruby, the object nil is Ruby's representation of nothing. Choose one from the menu on the left (or down below if you're on mobile), and get started!. org are unblocked. Dummies helps everyone be more knowledgeable and confident in applying what they know. 3pcs Booty Resistance Bands Set Loop Hip Booty Legs Exercise,Moderate Price. One of the great advantages of learning to program with Ruby is the breadth of built-in and community-provided software. C is a powerful systems programming language. This is going to be slower than the built-in sort methods, but it’s still an interesting exercise if you like computer science. Arrays and loops. Make a new array if you need to; Then, sort the students so that A+ students come first; Next, select just the students with A+ in their names. Note that the zips. Ip Address freedomfightersforamerica. Codecademy is the easiest way to learn how to code. Using the provided code, print "Me!" to the console. io about Ruby's Enumerable module. Ruby/Numo::NArray - New NArray class library. In this tutorial, I’ll show how to declare, populate, and iterate through Java string arrays, including the newer for-loop syntax that was introduced with Java 5. Working with Arrays (2) Note: At the moment these exercises require reading up until "Block return values". So basically you can you it for all/most of your programming tasks and is great for beginners. More than 2500 pages of book content and 53 hours of video that teach you to code from total beginner up to professional-grade web development. Look up Ruby's "range operator" (. Some weeks have exercises and quizes, this is the most important part of the course. In this exercise you'll get to try out great Sass features like imports, variables, nesting, and even loops, and come away with a solid grasp on how Sass can be used to clean things up. Lists are very similar to arrays. The full StdOut API. drug-rehab-palm-springs. 8 - program which has day of the year and month day. zThe first one is very easy. Again, it takes an array of key-value pairs. AsReadOnly(T[]) Returns a read-only wrapper for the specified array. Programming Languages¶. Exercise Description. org free interactive C tutorial. This module assumes you have some programming knowledge already and want a quick guide/reference to Ruby code. Compared to some languages, Ruby is very free and easy about variables, it cuts you a lot of slack and assumes for the most part that you know what you are doing. freedomfightersforamerica. Total size homepage is 1. 3 Arrays and Hashes Ruby’s arrays and hashes are indexed collections. Compared to some languages, Ruby is very free and easy about variables, it cuts you a lot of slack and assumes for the most part that you know what you are doing. A structure array is a data type that groups related data using data containers called fields. In this tutorial, you'll explore some of the most practical methods Ruby provides for working with data stored in arrays. Recently I've been working on adding more exercises to DevMemo. Treehouse is an online training service that teaches web design, web development and app development with videos, quizzes and interactive coding exercises. The trail offers a number of activity options and is accessible year-round. So basically you can you it for all/most of your programming tasks and is great for beginners. For example, one can create an array of references to other arrays. Creating Arrays. Retrieving an element from an Array. Create two arrays, one a string array, the other a int array. In Scala, the main code construct is an object (versus a class in Java). Ruby on Rails combines Ruby with the front-end trifecta—HTML, CSS, and JavaScript—to create web applications that run on a web server, not in the web browser. Technically, Ruby on Rails is a package library (a RubyGem, to be precise) for the Ruby programing language, as Daniel Kehoe of the RailsApps project explains. The first exercise should be fairly simple. Both arrays and hashes grow as needed to hold new elements. The core of that framework is a programming language called Ruby. For an easier version of this tutorial, see Learn Ruby for Beginners. In this exercise, you will correct errors in a simple JavaScript program that prints information for the Hotel Tennessee. Numpy arrays are great alternatives to Python Lists. 01-Full-name. Our standard audio library. Page 1 of 4 - Dynamic Arrays: Using malloc() and realloc() - posted in C/C++ Tutorials: Note: This tutorial uses pointers pretty heavily. Open up the folder and read the README to learn more about them. Data Structures for PHP Devs: Stacks and Queues we can easily implement a stack using arrays since arrays already provide push and pop operations. We use googletest as a testing framework for C++ coding exercises. values_at array. Learn programming, marketing, data science and more. Ruby Exercise: Count the numbers in an array between a given range is using an Array#select method and its saying select this value if the value is included in. It's also possible to create an array of arrays known as multidimensional array. Hold for a few seconds and release. 7 - Readlines using array; Exercise 5. Lists are very similar to arrays. - Pass this information or bad luck will follow. The jTextField1 and jTextField2 boxes will be used for user input and jTextField3 for program output - what we are creating is a very simple calculator. au/event/[email protected] The book has noticeable spelling/grammatics errors occasionally, and with a lack of history for the company that produces this book and others, this sets the book in a somewhat "needs polish" category. This is a collection of exercises to practice various aspects of Ruby. As a result, the statement arr2. Discover Ruby arrays - a fundamental pillar of Ruby. Rails uses this special ability all the time. Generate an array of 20 random integers, with the integer values ranging from 1 to 1000. In Ruby, the object nil is Ruby's representation of nothing. Each folder in this repository is a set of related exercises. Avoid the lengthy process and learn Ruby on Rails functionality in just a few hours! By the end of this Ruby on Rails tutorial, you'll learn what is Ruby on Rails, what is Ruby used for and even the basic functionality of this programming language. Testing Ruby solutions. This guide, however, assumes that you do not have any experience. Alright, practice time. Dogs are also able to use this trail but must be kept on leash. The GCD of three or more numbers equals the product of the prime factors common to all the numbers, but it can also be calculated by repeatedly taking the GCDs of pairs of numbers. I can't recall when I've ever used it elsewhere. Presenting W Remote available for purchasing right now. If they guess the entire word before then, they win. Simple arrays. C is a powerful systems programming language. When you're done coding a solution, look at how we would solve it. General form of declaring N-dimensional arrays: Total number of elements that can be stored in a multidimensional array can be. Build a method that will print out the alphabet in Ruby without hard coding in the letters a through z. C++ program for Constructor and Destructor Declaration, Definition. Treehouse is an online training service that teaches web design, web development and app development with videos, quizzes and interactive coding exercises. org free interactive Ruby tutorial. 2015-01-16 Brent Fulgham [Mac] Correct infinite loop in Wheel Handler code in EventHandlerMac https://bugs. Our standard drawing library. Go to the editor Sample Output: true true true false. Each field can contain any type of data. PHP exercises? Not so much, although more now than when this site first launched. We refer to the objects within an array as its elements. I'll give you the key-value pairs to start with. Blogs: Read about what's happening right now in the Ruby community. Take note that they won't have any values. Write a Ruby program to check two non-negative integer values and return true if they have the same last digit. from a Ruby collection. It runs on a variety of platforms, such as Windows, Mac OS, and the various ver. Learn Ruby - Arrays, Conditionals, Loops In Ruby, "truthy" and "falsey" values can be used in place of boolean conditions. By the end of the training, you will become an expert in designing and developing both front end and back end websites and solutions using Ruby on rails. Ruby From the Ground Up — Arrays. 1BestCsharp blog Recommended for you. Using the provided code, print "Me!" to the console. Exercise 2 - Create an array of marks you got in your last assessment. I’ll leave that as an exercise to the reader return both David Thomas and David Black. Ruby arrays are not as rigid as arrays in other languages. To print items of your array, use print, then arrayName[i] where "arrayName" is the name of the array and "i" is the place of the array you want to access, and remember, counting starts at zero. Real Payday Loan Sites. Data for this research were acquired during the 2010 rainy season using an array of wireless weather stations (SensorScope) as well as surface energy balance stations that based upon eddy correlation heat flux measurements. More than 2500 pages of book content and 53 hours of video that teach you to code from total beginner up to professional-grade web development. You'll learn about different ways to work with &; store data in Ruby. One just starts with the array name, followed by ()between which are the indices separated by ,. Does order matter? If yes, then use an array. Just for fun let’s implement our own sorting method. It consists of a low and a high number separated by two dots. Like Perl, Ruby is good at text processing. If the array is empty the first form returns nil and the second form returns an empty array. Do all the exercises and view our solutions after you finish. Note: this method will not change the original array. Numpy Arrays Empezando. Programming Exercises. Page 1 of 4 - Dynamic Arrays: Using malloc() and realloc() - posted in C/C++ Tutorials: Note: This tutorial uses pointers pretty heavily. The Interactive Ruby Shell is essentially a REPL (read-eval-print loop). LearnStreet - Free online Ruby tutorials & practice exercises; A Ruby Tutorial that Anyone can Edit (broken) Learning Ruby A free tool to find and learn Ruby concepts; Books Print. months = Array. Train on kata. There are many ways to create or initialize an array. It's also possible to create an array of arrays known as multidimensional array. Mindmajix Ruby On Rails training provides in-depth knowledge on all the core fundamentals of Ruby and MVC design patterns through real-time use cases and projects. Two very common data structures that you will use as a Ruby programmer are arrays and hashes. Retrain with new, creative, and optimized approaches. I'll assume here that you know what a variable is. Learn Enough Ruby to Be Dangerous is available as an ebook, an offline video series, and as a structured, self-paced online course. There is no need to download anything - Just click on the chapter you wish to begin from, and follow the instructions. Loops & Iterators. Lists can be indexed, sliced and manipulated with other built-in functions. Similar to the other two dynamic languages, arrays in ruby can also grow and shrink as the user needs them. Given the following list of student names, iterate over them, prepending "A+ " if their name includes an "A" in it. *FREE* shipping on qualifying offers. Learn C with our popular C tutorial, which will take you from the very basics of C all the way through sophisticated topics like binary trees and data structures. org is a free interactive PHP tutorial for people who want to learn PHP, fast. The videos are broken up by topic, so if you know one topic you can safely skip that video. It appears in most of the built-in Ruby classes, and is useful when working with enumerables. Two very common data structures that you will use as a Ruby programmer are arrays and hashes. One just starts with the array name, followed by ()between which are the indices separated by ,. Probably the most popular exercise tennis balls people are using right now could be the. If you are working on Java and have an array with a large amount of data, you may want to print certain elements in order to view them conveniently. The key here is the array, where you set the main sorting criteria first & then the rest separated by commas. If you're behind a web filter, please make sure that the domains *. Introduction; Operator; Statement; Number; Array; Hash; Date Time; File; String. Just like arrays, hashes allow you to store multiple values together. A loop is the repetitive execution of a piece of code for a given amount of repetitions or until a certain condition is met. If the contents of a variable can quack like. User Groups: Get in contact with Rubyists in your area. The range operator produces an interval with a set beginning and end. Collection of good problems and solutions from various high quality reference materials. Retrain with new, creative, and optimized approaches. # The verbose version are match, sub, gsub, sub! and gsub!; # pattern needs to be a Regexp object; it yields a MatchData # object. Type in some expression, and the result gets returned immediately. Yes, the observation that a number divisible by 3 and 5 is also divisible by 3 * 5 is the key to a neat FizzBuzz solution. com/feed From chemistry to computer programming, arts to World War II, ThoughtCo. Arrays are an extremely valuable data set. c and include/ruby/st. Ruby is a popular programming language to build web applications. Archive of completed CodeWars exercises, language - Ruby. UNIT OVERVIEW: Ruby Part 4 Lesson Course Exercises Objectives Progression Pathways Time (min) 25 16. How to initialize an array in one step using Ruby? note also that you can use enumerators in Ruby 1. Treehouse is an online training service that teaches web design, web development and app development with videos, quizzes and interactive coding exercises. Following the first ten lessons in the Launch School Ruby programming tutorial, 17 exercises to challenge you - each of which have a solution and a video walkthrough. Join GitHub today. Two common use cases for regular expressions include validation & parsing. The effects of vortex translation and radial vortex structure in the distribution of boundary layer winds in the inner core of mature tropical cyclones are examined using a high-resolution slab model and a multilevel model. These exercises are designed to improve your skills as a programmer. Interestingly, nobody uses it much - but let's leave the alternatives for the next exercise. Assign the string array three storage spaces which contain the phrase hello world. Remember arrays start with and index of 0! This is the last post for today. One way is with the new class method − names. Exercise 35 is long and it's a doozy. zThe first one is very easy. This course takes a very structured approach of teaching Rails starting with Ruby - the programming language behind Rails. Exercise File. Working with Arrays (1) Before you get started, make sure you have your text editor and terminal open, and you have navigated to your exercises directory in the terminal. Because they help detect corrupted files, clearly defined validations are an important part of writing any decoder for binary file formats. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the Ruby programming language. An experienced programmer would learn a lot from Beginning Ruby, but there are other books that are much easier to follow. Exercise File. Udemy is an online learning and teaching marketplace with over 100,000 courses and 24 million students. A Tour of Go A Tour of Go. Lists are very similar to arrays. Open up the folder and read the README to learn more about them. The first two examples instantiate an array in the letters variable. Ip Address freedomfightersforamerica. Create an array of fixed size (maximum capacity), lets say 10. If the contents of a variable can quack like. Before understanding this, you should have basic idea about Arrays. It also does not affect the original array; Example:. e address of the first element of the array is also allocated by the compiler. Roman Numerals (#22) This week's quiz is to write a converter to and from Roman numerals. This exercise gives you a feeling as to what it takes to get to specific array elements. Yes, it has a class (NilClass) and several methods common to all objects. The ruby-doc. These are bold claims, but we think that after reading this book you'll agree with them. Arrays - Practice. February 6 - Finding Elements Nested Inside Multiple Arrays in Ruby This coding exercise tests your knowledge of iterating through nested arrays collections and implementing a basic search algorithm. This course provides the basics that new and experienced developers need to know to start coding with Ruby. au/event/[email protected] Create two arrays, one a string array, the other a int array. Note: this method will not change the original array. I'll assume here that you know what a variable is. Arrays can be used in a lot of different, and useful ways, but the most basic one is to retrieve a certain element by the way of referring to its position: Please get me the element at position 1! In Ruby, you can do this with square brackets. In this exercise, you will create a Web page that uses variables to display information about the five largest islands in the world. Ruby Beach is a 1. Nothingness is not the same as 0, nor an empty string like "". Arrays are going to be extremely useful for helping us to keep information organized. uniq! array. com] Udemy - The Complete Web Developer in 2019 Zero to Mastery » video 2 days 11 GB 5 2. NET, Visual C#. Learn Enough Ruby to Be Dangerous is available as an ebook, an offline video series, and as a structured, self-paced online course. We refer to the objects within an array as its elements. Dummies helps everyone be more knowledgeable and confident in applying what they know. Everything from "Hello World" to Object Oriented Programming is covered. The size of an array object is always equal to the second template parameter used to instantiate the array template class (N). Note: this method will not change the original array. 14 - Histogram of Frequency of Characters (0 to 127) and we create an array ` int character[TNOCHAR]` to hold the number of occurances of those. More syntax for conditions will be introduced later, but for now consider simple arithmetic comparisons that directly translate from math into Python. Using the provided code, print "Me!" to the console. Just run the code below to print all the values in the array. This is going to be slower than the built-in sort methods, but it's still an interesting exercise if you like computer science. org is a free interactive JavaScript tutorial for people who want to learn JavaScript, fast. Learning PHP 5 covers the following topics, and more: How PHP works with your web browser and web server. Basically, it is the set of integers from a to b, sequentially. Recently I've been working on adding more exercises to DevMemo. au/event/[email protected] This program requires two initial arrays: an array of coins (which is at first empty) and an array of amounts. Once the list is initialized, we can begin inserting numbers into the list. If the array has "holes" (that is, nil values between other non-nil values), then #t can be any of the indices that directly precedes a nil value (that is, it may consider any such nil value as the end of the array). Ruby Exercise: Count the numbers in an array between a given range is using an Array#select method and its saying select this value if the value is included in. lets begin with creating the Game class. Arrays are going to be extremely useful for helping us to keep information organized. QuickSort Implementation. It's extremely powerful but also relatively easy to learn, making it an ideal place to start your web development journey. 1 is not usable because it outright segfaults, so if you want to use 1. [Commercial]. Inline array initialization. Welcome to C# Examples. A Tour of Go A Tour of Go. This refers to our ability in Ruby to open up classes and add methods at any time after they have been defined. values_at array. Assign the string array three storage spaces which contain the phrase hello world. One way is with the new class method − names. Provide collection Swing controls. LearnStreet - Free online Ruby tutorials & practice exercises; A Ruby Tutorial that Anyone can Edit (broken) Learning Ruby A free tool to find and learn Ruby concepts; Books Print. Where? Webucator's private PHP classes can be delivered at your office anywhere in the world or online with a live instructor. Take one step toward home. ← Exceptions | RubyDoc →. You can browse for and follow blogs, read recent entries, see what others are viewing or recommending, and request your own blog. A negative index is assumed relative to the end of the array --- that is, an index of -1 indicates the last element of the array, -2 is the next to last element in the array, and so on. Write a Ruby program to sort an given array of strings by length. We show that the horizontal resolution was increased four times and that the horizontal viewing zone angle was increased approximately four times. add is $\Theta(n)$ — you can find where to insert in log time, but you have to make room in the array, which is linear. Advanced JavaScript Concepts | Download and Watch Udemy Pluralsight Lynda Paid Courses with certificates for Free. Probably the most popular exercise tennis balls people are using right now could be the. Ruby one-liners; VimLinkNotes; Blog Tools. Ruby Tutorial - Ruby is a scripting language designed by Yukihiro Matsumoto, also known as Matz. The idea is to store multiple items of the same type together. This will descend down the directory/ies in the variable "directory" (which can be an array) returning an array of strings with the names of the files matching "*. Loops & Iterators. It first checks whether we have reached our goal amount. Numpy Arrays Empezando. Put your new-found Sass knowledge to the test in this exercise as we refactor a stylesheet from plain ole' CSS to Sass. It can cut up a string into pieces along a pre-defined string or regex returning an array of smaller strings. Let's begin. This coding exercise examines how to properly count the total number of words in Ruby. Creating Arrays. HackerRank Practice Ruby 12 Ruby Array index part 2 by kagaya john. The course includes full online access to the book content, streaming videos, progress tracking, exercises, and community exercise answers. Description. Learn Ruby the Hard Way: A Simple and Idiomatic Introduction to the Imaginative World Of Computational Thinking with Code (3rd Edition) (Zed Shaw's Hard Way Series) [Zed A. Create an array using square brackets like so:. Sorting a Ruby array by two or more class. When you're done coding a solution, look at how we would solve it. Object-Oriented Programming I 1 - 10 • Understand a class and create a method within a class • Understand an instance variable and practise creating one • Recognise scope and the different scopes of variables. HackerRank Practice Ruby 12 Ruby Array index part 2 by kagaya john. Page 1 of 4 - Dynamic Arrays: Using malloc() and realloc() - posted in C/C++ Tutorials: Note: This tutorial uses pointers pretty heavily. Learn Ruby - Arrays, Conditionals, Loops In Ruby, "truthy" and "falsey" values can be used in place of boolean conditions. Change: This is the recursive method. Because arrays in Ruby are dynamic, we'll be starting off with a simple implementation of building a stack that can be grown as we add elements to it. The for/in loop calls the each method of the specified object. Get unstuck. Returns the number of elements in the array container. Let's go ahead and run this file by typing ruby array_addition. However, in the beginning the language was pure, very, very similar to Ruby where you never have to specify types. NET and Java. Ruby - Comments - Comments are lines of annotation within Ruby code that are ignored at runtime. Issue Tracking: Report or help solve issues in Ruby. Reverse a String in Ruby (App Academy Exercise) I've been going through the App Academy Coding Challenges and I thought this would be a good opportunity to start posting on Medium. Archive; RSS; Ruby one-liners. In Ruby the C-like for-loop is not in use. However, it returns the original array unaffected. Returns a new array that is a one-dimensional flattening of this hash. References can be used like any other scalars. This Ruby on Rails course is 10 weeks long and assumes you know very little about programming and have not used Ruby, Rails, or Databases previously. The full StdOut API. com] Udemy - The Complete Web Developer in 2019 Zero to Mastery » video 2 days 11 GB 5 2. Write a Ruby program to print the elements of a given array. Learn, teach, and study with Course Hero. 1 surround sound for an immersive audio experience, and sumptuous dining options from Crown Grill to. element, document head, and. Open up the folder and read the README to learn more about them. Build a method that will print out the alphabet in Ruby without hard coding in the letters a through z. It should look like something like this, only longer:. An experienced programmer would learn a lot from Beginning Ruby, but there are other books that are much easier to follow. unshift array. Meet The Overflow, a newsletter by developers, for developers. #!/usr/bin/env ruby array = Array. Python is a good choice for mathematical calculations, since we can write code quickly, test it easily, and its syntax is similar to the way mathematical ideas are expressed in the mathematical literature. LearnStreet - Free online Ruby tutorials & practice exercises; A Ruby Tutorial that Anyone can Edit (broken) Learning Ruby A free tool to find and learn Ruby concepts; Books Print. Get unstuck. This coding exercise examines how to properly count the total number of words in Ruby. Preface: Learning by Doing; “Learn Java the Hard Way” is ©2013–2015 Graham Mitchell. 7 - Readlines using array; Exercise 5. Learn, teach, and study with Course Hero. Ruby’s original heresy was indeed to place the happiness of the programmer on a pedestal. Ruby Array: Exercise-48 with Solution. Learn To Solve It helps you learn Computer Science and Programing in a straight forward way. Learn C with our popular C tutorial, which will take you from the very basics of C all the way through sophisticated topics like binary trees and data structures. These are often multiple choice questions, or exercises that require you to write, debug, or interpret a single method or function. This means it might stop and free unused memory. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: