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How do I use Ruby for shell scripting?
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By default, you already have access to Dir and File, which are pretty useful by themselves.
Dir['*.rb'] #basic globs
Dir['**/*.rb'] #** == any depth of directory, including current dir.
#=> array of relative names
File.expand_path('~/file.txt') #=> "/User/mat/...
What is the difference between map and flatMap and a good use case for each?
Can someone explain to me the difference between map and flatMap and what is a good use case for each?
16 Answers
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How to delete an SMS from the inbox in Android programmatically?
On Android phones SMS messages registered to applications also get sent to the device's inbox. However to prevent clutter, it'd be nice to be able to remove application specific SMS messages from the inbox to reduce the potential overflow of those messages.
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How to show google.com in an iframe?
... answered Jan 2 '12 at 12:21
Andreas KochAndreas Koch
1,72911 gold badge1212 silver badges88 bronze badges
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Assign an initial value to radio button as checked
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@matthewh - nah, you can use just "checked" on it's own and it is valid HTML (although not valid XHTML). Personally I prefer 'checked="checked"', but you don't have to use it ... indeed, there's quite a strong case against using it.
– Algy Taylor
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Compiling simple Hello World program on OS X via command line
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@mathepic: and the +1. It is not required in C++. If main reaches the end of the function without hitting a return then it implicitly returns 0.
– Martin York
Nov 1 '10 at 22:43
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Use underscore inside Angular controllers
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When you include Underscore, it attaches itself to the window object, and so is available globally.
So you can use it from Angular code as-is.
You can also wrap it up in a service or a factory, if you'd like it to be injected:
var underscore = angular.module('underscore', []);
underscore.fac...
How to read a text-file resource into Java unit test? [duplicate]
...t closing resources is particularly important. "Unit" tests should be fast and self contained, leaving resources open, potentially for the duration of the test run, means at best your tests run slower, and at worst fail in difficult-to-diagnose ways.
– dimo414
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Why does printf not flush after the call unless a newline is in the format string?
...sh(stdout); // Will now print everything in the stdout buffer
Edit: From Andy Ross's comment below, you can also disable buffering on stdout by using setbuf:
setbuf(stdout, NULL);
or its secure version setvbuf as explained here
setvbuf(stdout, NULL, _IONBF, 0);
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PHP array_filter with arguments
... page. The idea is that you create an object with the desired state ($num) and the callback method (taking $i as an argument):
class LowerThanFilter {
private $num;
function __construct($num) {
$this->num = $num;
}
function isLower($i) {
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