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Why is #!/usr/bin/env bash superior to #!/bin/bash?
...ven seen one enterprising individual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing so.
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How to count items in a Go map?
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Use len(m). From http://golang.org/ref/spec#Length_and_capacity
len(s) string type string length in bytes
[n]T, *[n]T array length (== n)
[]T slice length
map[K]T map length (number of defined keys)
c...
Convert InputStream to byte array in Java
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You can use Apache Commons IO to handle this and similar tasks.
The IOUtils type has a static method to read an InputStream and return a byte[].
InputStream is;
byte[] bytes = IOUtils.toByteArray(is);
Internally this creates a ByteArrayOutputStream and co...
Python: How to create a unique file name?
I have a python web form with two options - File upload and textarea . I need to take the values from each and pass them to another command-line program. I can easily pass the file name with file upload options, but I am not sure how to pass the value of the textarea.
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Defining a function with multiple implicit arguments in Scala
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They must all go in one parameter list, and this list must be the last one.
def myfun(arg:String)(implicit p1: String, p2:Int)={}
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How can I show the name of branches in `git log`?
...ecent commit of the branch (the tip). All commits in the history are equal and anonymous. If you want named branches so that every commit carries the branch name, you can use Mercurial.
– Sampo Smolander
Jul 25 '13 at 7:11
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Migration: Cannot add foreign key constraint
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Add it in two steps, and it's good to make it unsigned too:
public function up()
{
Schema::create('priorities', function($table) {
$table->increments('id', true);
$table->integer('user_id')->unsigned();
$tabl...
How can I write text on a HTML5 canvas element?
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Is there any way to get the font width and size so we can center it? (Dynamic content)
– Oliver Dixon
Dec 30 '14 at 2:20
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Why is Scala's immutable Set not covariant in its type?
...nt hinges around "the concept behind sets as functions" - could this be expanded upon? For example, what advantages does "a set as a function" give me that a "set as a collection" not? Is it worth losing the use of that covariant type?
– oxbow_lakes
Mar 24 '09 ...
How can I read a whole file into a string variable
...ame string) ([]byte, error)
ReadFile reads the file named by filename and returns the contents. A successful call
returns err == nil, not err == EOF. Because ReadFile reads the whole file, it does not treat
an EOF from Read as an error to be reported.
You will get a []byte instead of a st...