How to Write JSON in Python
Python's json module provides dumps() function to convert objects to JSON strings, using the same module as for parsing JSON.
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Posts tagged with "polyglotbits"
How to Read a File in Python
Python makes reading files simple with built-in context managers that automatically handle file closing, similar to Ruby's block approach.
How to Read a File in C#
Csharp was probably the first compiled language I really loved.
How to Read a File in Lua
Reading a file in lua is pretty straight forward.
How to Read Program Arguments in Lua
Lua is among the programming languages that I write about here I have used the least.
How to Read a File in C++
Reading a file in C++ is almost identical to how it's done C.
How to parse JSON in Rust
To parse json in Rust you need a library - the one used here is called rustc-serialize.
How to parse JSON in C++
In C++ there are no built-in ways to handle json, however there are many open source libraries to help you.
How to parse JSON in GO
The go standard library has all you json needs covered - the JSON package has methods for both encoding and decoding to/from JSON.
How to Write to a file in JavaScript
Writing a file in Javascript is as easy as using the built-in method fs.writeFile.
How to Solve Euler 1 in JavaScript
The Euler 1 problem is fairly simple to solve - most people intuitively know how to do it.
How to Write to a file in PHP
The simplest way of writing to a file in php is using the file_put_contents function.
How to Read from stdin in Haskell
In haskell there are two ways to read the stdin stream - which one to use depends on what you're trying to accomplish.
How to Read from stdin in C++
Reading from stdin in C++ is surprisingly concise - only 12 lines of code including includes and empty lines.
How to Write to a file in C
Writing to a file in c is surprisingly simple - you open a file, write to it and close it again.
How to Read a file in JavaScript
Reading a file in Javascript (nodejs) is as easy as using the built-in method fs.readFile.
How to Read a file in Go
In go you will sometimes write more code than you are used to in most higher level languages, but will have a lot more control over how it is done.
How to Read from stdin in Lisp
Just as with reading program arguments, lisp looks a bit weird when reading from the stdin stream - until you get the hang of it.
How to Read program arguments in Lisp
Lisp is a completely different way of looking at programming - where in Ruby everything is an object, in lisp everything is a list.
How to Write Json in Ruby
Unlike Javascript and PHP you don't call a function with one parameter - instead you can call to_json on the object you want to convert.
How to Parse Json in Ruby
In Ruby you parse json by first including the json library provided with the language.
How to Write Json in PHP
In PHP JSON stringify and parse are part of the core libraries - however in PHP they are called json_encode and json_decode respectively.
How to Parse Json in JavaScript
JSON is an integral part of the JavaScript language, so it should come as no surprise that parsing json is equally easy.
How to Read from stdin in Java
Reading from stdin in java looks like in most languages - Standard in is bound to System.in and must be opened as if it where a file.
How to Read from stdin in Ruby
Reading from stdin in ruby is as easy as calling STDIN.read
How to Write a TCP Echo Server in Ruby
In ruby you have lowlevel access to all the same methods that you do in C, but you also have some higher level sugar on top.
How to Write a TCP Echo Server in C
In c you are as close to the metal as possible in a high-level language, which shows in the verbose code you need to make a simple tcp server.
How to write a TCP Echo server in Javascript
If c is the most verbose way to write a tcp server, Javascript (nodejs) is probably the least verbose way.
How to Read from stdin in JavaScript
In javascript (nodejs anyway) stdin can be read as a stream of bytes, so you need to tell node which encoding it is.
How to Read from stdin in PHP
Reading from stdin in PHP is just like reading a file - the only difference is that the file to read is called php://stdin
How to Read a file in Elixir
Reading files in elixir is pretty straight forward - especially if you just want the content of a file you know exists.
How to Write Xml in Ruby
In Ruby there is no built-in support for parsing and writing xml, but my favourite tool for working with xml in ruby is nokogiri.
How to Read Program Arguments in PowerShell
I don't know much about PowerShell to be honest - it sounds to me like some kind of a windows version of bash/zsh.
How to Read Program Arguments in Perl
Reading perl has always been weird for me, but you can see where PHP and Ruby have borrowed many of their ideas.
How to Read Program Arguments in C#
In C# program arguments are a part of the main method signature, like in most c-based languages.
How to Read from stdin in Elixir
Elixir is rather easy - as long as you get past the pattern matching barrier I stumpled into when writing about reading program arguments.
How to Write Json in JavaScript
Since json is short for JavaScript Object Notation, it does not come as a surprise that is a natural part of the javascript language.
How to Parse Json in PHP
Once again php shows how it is an easy language for beginners - you don't have to think about much when you want to parse json.
How to Read a file in PHP
Reading a whole file is as easy as one function call in PHP.
How to Read from stdin in Go
Reading from stdin in go is as easy as reading from os.Stdin - the ioutil.ReadAll method reads all bytes into a buffer.
How to Read from stdin in C
Reading from stdin in c is exactly like reading from a file - in unix philosophy everything is a file after all.
How to Read a file in Ruby
In ruby you read a file in two steps - first open the file, and then iterate over the contents.
How to Read a file in C
Reading files in C is very easy - you need stdio.h, a FILE pointer, and call fopen on a filename.
How to Read Program Arguments in Rust
Rust reminds me of C in many ways - the program arguments include the program name at the first index.
How to Read Program Arguments in Haskell
This is the one programming language to date where I have had the hardest time doing the little hello world program.
How to Read Program Arguments in Go
Go has a main method with no arguments in its signature - you read the program arguments from os.Args.
How to Read Program Arguments in Elixir
Elixir is fundamentally different than many programming languages, which also shows in the simple task of making the Hello World program.
How to Read Program Arguments in JavaScript
In JavaScript (nodejs) you can access the program arguments in the array process.argv, but you have to skip two entries to get to the real arguments.
How to Read Program Arguments in Java
In Java like in C the program options are part of the main method signature.
How to Read Program Arguments in Ruby
Ruby has a global ARGV array which contains all arguments, but unlike C and PHP it does not contain the script name.
How to Read Program Arguments in C
In C program arguments are part of the main method signature, which means you can read a specific argument by reading the nth index of the argv array.
How to Read Program Arguments in PHP
In PHP the program arguments of current script is always available in the $argv variable.