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JavaScript checking for null vs. undefined and difference between == and ===
...is the difference between the null and undefined?
They're both values usually used to indicate the absence of something. undefined is the more generic one, used as the default value of variables until they're assigned some other value, as the value of function arguments that weren't provided when ...
How to specify the location with wget?
... prefix to prefix. The directory prefix is the
directory where all other files and sub-directories will be
saved to, i.e. the top of the retrieval tree. The default
is . (the current directory).
So you need to add -P /tmp/cron_test/ (short form) or --directory-pr...
How to use sidebar with the keyboard in Sublime Text 2 and 3?
...ut for "Focus Group 1", but if you want to focus the group which was originally focused, use Esc instead (see the unofficial docs). For example, if group 2 is focused, and you then focus the side bar, Esc will return the focus to group 2.
– TachyonVortex
Dec 16...
Delete topic in Kafka 0.8.1.1
...he easiest way to do that (if you don't care about up time) is to shutdown all your brokers, delete your logs for that topic and changing you ZK namespace.
– frank
Jun 18 '14 at 16:16
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Should 'using' directives be inside or outside the namespace?
...
There is actually a (subtle) difference between the two. Imagine you have the following code in File1.cs:
// File1.cs
using System;
namespace Outer.Inner
{
class Foo
{
static void Bar()
{
double d = Ma...
Another Repeated column in mapping for entity error
Despite all of the others post, I can't find a solution for this error with GlassFish, on MacOSX, NetBeans 7.2.
8 Answers
...
How to change navbar collapse threshold using Twitter bootstrap-responsive?
... I can't think of any way to achieve the overriding without restating all the CSS declarations.
– methodofaction
Feb 23 '12 at 5:15
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What is the direction of stack growth in most modern systems?
...
Stack growth doesn't usually depend on the operating system itself, but on the processor it's running on. Solaris, for example, runs on x86 and SPARC. Mac OSX (as you mentioned) runs on PPC and x86. Linux runs on everything from my big honkin' Syste...
What's the opposite of 'make install', i.e. how do you uninstall a library in Linux?
...not touch the rest of the filesystem and so will not remove previously installed software.
If you're lucky, running make uninstall will work. It's up to the library's authors to provide that, however; some authors provide an uninstall target, others don't.
If you're not lucky, you'll have to manu...
Hide grid row in WPF
...
UpVoted - Converters permit all this to be declarative in Xaml. I generally hate using code-behind to fiddle with visual stuff.
– Allen
May 22 '14 at 13:43
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