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MySQL Fire Trigger for both Insert and Update
Is it possible to fire a mysql trigger for both the insert and update events of a table?
3 Answers
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Can inner classes access private variables?
This errors out when I compile with class Outer::Inner' has no member named `var'
5 Answers
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Import module from subfolder
I want to import subfolders as modules. Therefore every subfolder contains a __init__.py . My folder structure is like this:
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Open Graph namespace declaration: HTML with XMLNS or head prefix?
I have seen conflicting information on how to best implement Open Graph namespaces. Specifically, the Open Graph website uses a few different methods, and the Facebook Open Graph examples use other methods.
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How to use php serialize() and unserialize()
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A PHP array or object or other complex data structure cannot be transported or stored or otherwise used outside of a running PHP script. If you want to persist such a complex data structure beyond a single run of a script, you need to se...
An example of how to use getopts in bash
...should return 0, upon hitting a non-existing flag it should return >0 (for the sake of simplicity I didn't differentiate between those cases and nobody forces you to print the usage text in the latter case). I have seen programs which always return != 0, though, even on -h/--help. Maybe I should ...
Python idiom to return first item or None
...xt(iter(your_list), None)
If your_list can be None:
next(iter(your_list or []), None)
Python 2.4
def get_first(iterable, default=None):
if iterable:
for item in iterable:
return item
return default
Example:
x = get_first(get_first_list())
if x:
...
y = get_fi...
How do you remove a Cookie in a Java Servlet
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The MaxAge of -1 signals that you want the cookie to persist for the duration of the session. You want to set MaxAge to 0 instead.
From the API documentation:
A negative value means that the cookie is not stored persistently and will be deleted when the Web browser exits. A zero valu...
What is the best way to tell if a character is a letter or number in Java without using regexes?
What is the best and/or easiest way to recognize if a string.charAt(index) is an A-z letter or a number in Java without using regular expressions? Thanks.
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Does running git init twice initialize a repository or reinitialize an existing repo?
What happens to an existing git repository when you issue git init again?
4 Answers
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