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How do I check if a directory exists? “is_dir”, “file_exists” or both?
...Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from creating a directory name 'foo'.
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Split string in Lua?
...ng, but there doesn't seem to be a function for this, and the manual way I tested didn't seem to work. How would I do it?
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How to suppress “unused parameter” warnings in C?
...line switch Wno-unused-parameter.
For example:
gcc -Wno-unused-parameter test.c
Of course this effects the whole file (and maybe project depending where you set the switch) but you don't have to change any code.
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How do I write a for loop in bash
...I'd be interested to know. You could execute the ssh inside a conditional test if it was a concern.
– terson
Nov 8 '09 at 19:07
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Using an HTML button to call a JavaScript function
...entById support:
if (document.getElementById) { // NB: no brackets; we're testing for existence of the method, not executing it
// do stuff...
}
You probably want to validate your input as well; something like
var vesdiameter = parseFloat(document.getElementById("VesDiameter").value);
if (is...
Different ways of clearing lists
...# Python 3.3+, most obvious
del alist[:]
alist[:] = []
alist *= 0 # fastest
See the Mutable Sequence Types documentation page for more details.
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LINQ Contains Case Insensitive
...n Skeet commented on a related question, this method won't pass the Turkey Test.
– JYelton
Jun 29 '12 at 20:57
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Another Repeated column in mapping for entity error
...org.hibernate.MappingException: Repeated column in mapping for entity: com.testtest.SomeCustomEntity column: COLUMN_NAME (should be mapped with insert="false" update="false")
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What is the difference between range and xrange functions in Python 2.X?
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Remember, use the timeit module to test which of small snippets of code is faster!
$ python -m timeit 'for i in range(1000000):' ' pass'
10 loops, best of 3: 90.5 msec per loop
$ python -m timeit 'for i in xrange(1000000):' ' pass'
10 loops, best of 3: 51.1 m...
the source file is different from when the module was built
...gt; Configuration Properties > Configuration, my console app (that runs tests for a web app in the same sln) was unchecked.
– emery.noel
Jan 7 at 13:03
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