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Print a file's last modified date in Bash
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You can use the
stat
command
stat -c %y "$entry"
More info
%y time of last modification, human-readable
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What is a semaphore?
...ly are there real-world situations where the analogy actually holds - it's more often that there are several of the same type, but still individual resources, like the bathrooms, which cannot be used this way.
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The correct use of a semaphore is for signaling from one task to another. A mutex is ...
What do 3 dots next to a parameter type mean in Java?
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It means that zero or more String objects (or a single array of them) may be passed as the argument(s) for that method.
See the "Arbitrary Number of Arguments" section here: http://java.sun.com/docs/books/tutorial/java/javaOO/arguments.html#vararg...
How to check what user php is running as?
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Limit file format when using ?
...refer to these tables for file types and their magic numbers, to perform a more robust server-side verification.
Here are three good reads on file-uploads and security.
EDIT: Maybe file type verification using its binary signature can also be done on client side using JavaScript (rather than just b...
Cast a Double Variable to Decimal
...double cannot be explicitly cast to a decimal, but doesn't a decimal carry more precision? (i.e. much like casting from an int to a double can be implicit.)
– user2821275
Aug 14 '14 at 18:35
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What's the canonical way to check for type in Python?
...n Functions in the Python Library Reference for relevant information.
One more note: in this case, if you're using Python 2, you may actually want to use:
if isinstance(o, basestring):
because this will also catch Unicode strings (unicode is not a subclass of str; both str and unicode are subcla...
Passing enum or object through an intent (the best solution)
...ill replace the calls with the code inside the function.
The functions are more familiar as they are similar to the SDK ones.
The IDE will autocomplete these functions which means there is no need to have previous knowledge of the utility class.
One of the downsides is that, if we change the order...
How to set DOM element as the first child?
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C++ catching all exceptions
... exception that is not caught, yet the code is clearly in C++. It would be more helpful to state that this will "catch all C++ exceptions" and then add some mention of structured exceptions to the notes on limited usefulness.
– omatai
Feb 5 '13 at 1:57
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