- published: 19 Oct 2009
- views: 107782433
A read–eval–print loop (REPL), also known as an interactive toplevel or language shell, is a simple, interactive computer programming environment that takes single user inputs (i.e. single expressions), evaluates them, and returns the result to the user; a program written in a REPL environment is executed piecewise. The term is most usually used to refer to programming interfaces similar to the classic Lisp machine interactive environment. Common examples include command line shells and similar environments for programming languages, and is particularly characteristic of scripting languages.
In a REPL, the user enters one or more expressions (rather than an entire compilation unit) and the REPL evaluates them and displays the results. The name read–eval–print loop comes from the names of the Lisp primitive functions which implement this functionality:
(+ 1 2 3)
, which is parsed into a linked list containing four data elements.What if? is a question that often is used in the context of:
What If may refer to:
Music Video Prequel for Iyaz's song "Replay." Get exclusive content, updates, and music on the official Iyaz website: http://iyazliveofficial.com/home/ FOLLOW IYAZ: http://www.facebook.com/iyaz http://www.instagram.com/iyazlive/ http://twitter.com/#!/iyazlive http://iyazliveofficial.com/home/ © 2009 WMG
The debut album ZENDAYA feat. "Replay" available now -http://smarturl.it/ziTunesa1 Facebook -- http://facebook.com/Zendaya Twitter -- http://twitter.com/Zendaya Instagram -- http://instagram.com/ZendayaMaree Music video by Zendaya performing Replay. (C) 2013 Hollywood Records, Inc.
The Interactive Window is an interactive environment that helps you quickly learn APIs, play with language features, and experiment with other .NET technologies by providing you with immediate feedback on the evaluation of code snippets. Unlike the standard REPL (read-eval-print-loop), the Interactive Window provides features like IntelliSense and syntax-coloring. In this video, you will see how the Interactive Window can help you learn an API as well as see how you can execute scripts and play with C# from the command-line.
Most Java developers have overlooked the Java 9 REPL. This new feature will enable you to make scripts and do live coding with Java using the new 'jshell'. In this talk I'll guide you through the process of building jshell and we'll do live coding to learn how it works and behaves. After this quickie you'll not only be able to build but also use jshell, OpenJDK needs more users to find bugs, make tests and improve this new addition to your JDK9/bin directory.
As we get started learning Node.js, we take a tour through the interactive REPL (Read–eval–print loop) and best resources for learning the JavaScript language!
In this episode I discuss how programming in Emacs is different than an IDE, and show a couple of short examples of how you can program in a REPL in Emacs Lisp and Scheme. I didn't cover quite as much as I hoped, so I might do a more technical in-depth episode on REPL usage.
The Scala REPL has been often touted as an advantage for the language: an interactive, exploratory experience very different from the static, often-IDE-based experience that for many is the bulk of their experience using Scala. Nevertheless, in comparison, the Scala REPL really sucks: buggy & unfriendly, it is not a place you want to spend most of your time. What if the Scala REPL had the same autocomplete as you'd get in Eclipse or IntelliJ? What if it had syntax-highlighting for everything? What if you could load libraries like Shapeless or Akka-HTTP to try out, without needing to muck with SBT? What if your Scala REPL was as versatile, usable and configurable as Bash or Zsh, and could be used as your home on the command line? Come hear about how you could turn all these "what if"s into...
Pry is a featureful irb replacement that provides Ruby programmers with a seriously souped-up REPL. Using some real-life examples, I'll explain how to use Pry to program more effectively. We'll start with the basics of exploring libaries and experimenting with code at lightning speed. Then we'll move up a level and discuss how to dig into, debug and even modify existing programs. Finally we'll cover a few of the plugins that make Pry a truly indispensible tool. Help us caption & translate this video! http://amara.org/v/FG5X/
What's new in Scala 2.8 - part 1 - the REPL. Part of a series of screencasts from Escalate Software - http://www.escalatesoft.com
I've had it up to here
With all of yer lies.
I've had enough
Of the people I despise.
Yer so impatient,
Yer so deranged,
I'm gonna end yer life,
It's already arranged!
I got an enemy
And that enemy is you!
I'm planning murder
I'm planning murder for you!
Go get an army,
I wanna war!
I'm gonna see your teeth on the floor!
I'm gonna hit you when you're goin' through the door!
I'm gonna kick you when you're half dead on the floor!
[Chorus]