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is_null($x) vs $x === null in PHP [duplicate]
PHP has two (that I know of, and three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically design...
Getting all names in an enum as a String[]
...and way to lazy to create an State array i guess, hehe, anyways iedited it now :)
– PermGenError
Dec 9 '12 at 0:15
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What optimizations can GHC be expected to perform reliably?
GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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How do I squash two non-consecutive commits?
...he rebase will be aborted.
#
# Note that empty commits are commented out
Now you change the file that it looks like this:
pick aaaaaaa Commit A
squash ddddddd Commit D
pick bbbbbbb Commit B
pick ccccccc Commit C
And git will now meld the changes of A and D together into one commit, and put B an...
How do I check if a variable exists?
I want to check if a variable exists. Now I'm doing something like this:
11 Answers
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How do I replace a git submodule with another repo?
...it rm --cached path_to_submodule (no trailing slash)
Commit and delete the now untracked submodule files
Now, add the new submodule with the --name flag. This will give git an alternate name to reference in .git/config for the submodule, to deconflict with the submodule that was there historicall...
Compiling problems: cannot find crt1.o
...idn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc.
You can do so like this on Debian:
aptitude show libc-dev
Ubuntu:
apt-get install libc-dev
On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you ca...
JSLint is suddenly reporting: Use the function form of “use strict”
... FYI: The globalstrict option in JSHint has changed. Try strict: 'global' now, and see jshint.com/docs/options/#globalstrict
– Hovis Biddle
Jan 29 '16 at 10:05
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OpenShift rhc setup using multiple accounts
.... username?? OR password??... I think it would be nicer to clearly let us know that you mean <openshift-username>
– SourceVisor
Jun 5 '16 at 16:33
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How do I make an HTML text box show a hint when empty?
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That is known as a textbox watermark, and it is done via JavaScript.
http://naspinski.net/post/Text-Input-Watermarks-using-Javascript-(IE-Compatible).aspx
or if you use jQuery, a much better approach:
http://digitalbush.com/proj...