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How can I negate the return-value of a process?
...at you don't have Bash as your shell (for ex.: git scripts, or puppet exec tests) you can run:
echo '! ls notexisting' | bash
-> retcode: 0
echo '! ls /' | bash
-> retcode: 1
share
|
im...
How to implement Enums in Ruby?
...Ruby's expressive power. To avoid problems, most Ruby programmers practice test-driven design, which will find not just typos but also logic errors.
– emk
Aug 20 '09 at 20:14
10
...
What is the relative performance difference of if/else versus switch statement in Java?
...
Use switch!
I hate to maintain if-else-blocks! Have a test:
public class SpeedTestSwitch
{
private static void do1(int loop)
{
int temp = 0;
for (; loop > 0; --loop)
{
int r = (int) (Math.random() * 10);
switch (r)
...
Convert form data to JavaScript object with jQuery
...ta in the first place?" Because serializeArray is already written, is unit tested in multiple browsers, and could theoretically be improved in later versions of jQuery. The less code you write that has to access inconsistent things like DOM elements directly, the more stable your code will be.
...
What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...h API (experimental at this time) are the only in DOM, so should be the fastest.
I saw a lot of information that is not accurate anymore, so I made a test page where anyone can test version from version which one is best at any time:
https://jsperf.com/xhr-vs-jquery-ajax-vs-get-vs-fetch
From my t...
What does do?
...E9 or IE8, then I would recommend using the tag. If you only support the latest browsers (IE11 and/or Edge) then I would consider dropping this tag altogether. If you use Twitter Bootstrap and need to eliminate validation warnings, this tag must appear in its specified order. Additional info below:
...
Search for one value in any column of any table inside a database
...- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripod.com
-- Tested on: SQL Server 7.0 and SQL Server 2000
-- Date modified: 28th July 2002 22:50 GMT
CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))
SET NOCOUNT ON
DECLARE @TableName nvarchar(256), @Colum...
Gmail's new image caching is breaking image links in newsletter
...deployed your php code on your server but you forgot to upload images. you tested once with your email logic. your system generated an HTML email. When this email will hit the gmail server GoogleImageProxy will try to fetch and store the images from your site to its own proxy server. while fetching ...
.gitignore for Visual Studio Projects and Solutions
.../
x86/
build/
bld/
[Bb]in/
[Oo]bj/
# Roslyn cache directories
*.ide/
# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
#NUNIT
*.VisualState.xml
TestResult.xml
# Build Results of an ATL Project
[Dd]ebugPS/
[Rr]eleasePS/
dlldata.c
*_i.c
*_p.c
*_i.h
*.ilk
*.meta
*.obj
*.pch
*.pdb
*.pgc
*.p...
Check whether a variable is a string in Ruby
...
In addition to the other answers, Class defines the method === to test whether an object is an instance of that class.
o.class class of o.
o.instance_of? c determines whether o.class == c
o.is_a? c Is o an instance of c or any of it's subclasses?
o.kind_of? c synonym for *is_a?*
c === o f...