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How do you create optional arguments in php?
...ust be a constant expression. It can't be a variable or a function call.
If you need this functionality however:
function foo($foo, $bar = false)
{
if(!$bar)
{
$bar = $foo;
}
}
Assuming $bar isn't expected to be a boolean of course.
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Is there a regular expression to detect a valid regular expression?
...ble to detect a valid regular expression with another regular expression? If so please give example code below.
8 Answers
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How can you run a command in bash over until success
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Difficult to Ctrl-C out of this.
– DonGar
Feb 10 '13 at 22:38
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iOS 7 - Failing to instantiate default view controller
...r project settings, change your "Main Interface" to the new Main_iPhoneV2 (If it's your iPad and you're writing a universal app, you'll have to edit the -Info.plist and look for the value "Main storyboard file base name (iPad)
Recompile, and stop pulling your hair out
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How does one change the language of the command line interface of Git?
...t variable LC_ALL is set, which has precedence over LANG. See the UNIX Specification - Environment Variables for further explanation.
# Set Git language to English
#alias git='LC_ALL=en_US git'
alias git='LC_ALL=en_GB git'
In case you added these lines to ~/.bashrc the alias will be defined when ...
Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
...g arrays to functions.
Actually it is not possible to pass an array in C. If you write syntax that looks like it should pass the array, what actually happens is that a pointer to the first element of the array is passed instead.
Since the pointer does not include any length information, the conten...
What was the strangest coding standard rule that you were forced to follow? [closed]
... On the other hand, eliminating an option at the beginning like "if(param == null) return null" can clean up your code quite a bit, to prohibit this instead of encourage it is somewhat criminal.
– Bill K
Oct 20 '08 at 16:17
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How to get root view controller?
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if you are trying to access the rootViewController you set in your appDelegate. try this:
Objective-C
YourViewController *rootController = (YourViewController*)[[(YourAppDelegate*)
[[UIApp...
Group query results by month and year in postgresql
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@BurakArslan Did the results look like what the OP specifically asked for?
– bma
Nov 24 '14 at 20:41
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Convert .pfx to .cer
...onvert a .pfx (Personal Information Exchange) file to a .cer (Security Certificate) file? Unless I'm mistaken, isn't a .cer somehow embedded inside a .pfx? I'd like some way to extract it, if possible.
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