What is the difference between printf() and puts() in C?
puts is simpler than printf but be aware that the former automatically appends a newline. If that’s not what you want, you can fputs your string to stdout or use printf.
output
How to get a specific output iterating a hash in Ruby?
hash.each do |key, array| puts “#{key}—–” puts array end Regarding order I should add, that in 1.8 the items will be iterated in random order (well, actually in an order defined by Fixnum’s hashing function), while in 1.9 it will be iterated in the order of the literal.
How to create multiple output paths in Webpack config
Webpack does support multiple output paths. Set the output paths as the entry key. And use the name as output template. webpack config: entry: { ‘module/a/index’: ‘module/a/index.js’, ‘module/b/index’: ‘module/b/index.js’, }, output: { path: path.resolve(__dirname, ‘dist’), filename: ‘[name].js’ } generated: └── module ├── a │ └── index.js └── b └── index.js
How to pipe stdout while keeping it on screen ? (and not to a output file)
Here is a solution that works at on any Unix / Linux implementation, assuming it cares to follow the POSIX standard. It works on some non Unix environments like cygwin too. echo ‘ee’ | tee /dev/tty | foo Reference: The Open Group Base Specifications Issue 7 IEEE Std 1003.1, 2013 Edition, §10.1: /dev/tty Associated with … Read more
What is ‘YTowOnt9’?
It seems to be a PHP-serialized empty array, base 64 encoded. $ base64 -D <<< ‘YTowOnt9’ a:0:{} $ php -r ‘var_dump(unserialize(base64_decode(“YTowOnt9”)));’ array(0) { } There are many scripts that serialize arrays of data. When the arrays have data, they vary greatly, so the Base64 encoded PHP-serialized values do too, but when they are empty they … Read more
How do I print out the contents of a vector?
If you have a C++11 compiler, I would suggest using a range-based for-loop (see below); or else use an iterator. But you have several options, all of which I will explain in what follows. Range-based for-loop (C++11) In C++11 (and later) you can use the new range-based for-loop, which looks like this: std::vector<char> path; // … Read more
How do I print out the contents of a vector?
If you have a C++11 compiler, I would suggest using a range-based for-loop (see below); or else use an iterator. But you have several options, all of which I will explain in what follows. Range-based for-loop (C++11) In C++11 (and later) you can use the new range-based for-loop, which looks like this: std::vector<char> path; // … Read more
How do I print colored text to the terminal?
This somewhat depends on what platform you are on. The most common way to do this is by printing ANSI escape sequences. For a simple example, here’s some Python code from the Blender build scripts: class bcolors: HEADER = ‘\033[95m’ OKBLUE = ‘\033[94m’ OKCYAN = ‘\033[96m’ OKGREEN = ‘\033[92m’ WARNING = ‘\033[93m’ FAIL = ‘\033[91m’ … Read more