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How to change the cursor into a hand when a user hovers over a list item?
...irksmode.org/css/user-interface/cursor.html#note (referenced in an earlier comment) states that hand must come after pointer. I recommend using just pointer - IE 5.5 is deader than IE 6.
– Iiridayn
Jul 10 '13 at 21:31
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Map a network drive to be used by a service
...e. You can just create a link in the file system that any app can use. See http://en.wikipedia.org/wiki/NTFS_symbolic_link.
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MongoDB mongorestore failure: locale::facet::_S_create_c_locale name not valid
I created a dump with mongodump on computer A (ubuntu 12.04 server). I moved it to computer B (ubuntu 12.04 server) and typed:
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Obtaining a powerset of a set in Java
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Yes, it is O(2^n) indeed, since you need to generate, well, 2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<Set<T>> sets = new HashSet<Set<T>>(...
How do you get the list of targets in a makefile?
...mpt to improve on @nobar's great approach as follows:
uses a more robust command to extract the target names, which hopefully prevents any false positives (and also does away with the unnecessary sh -c)
does not invariably target the makefile in the current directory; respects makefiles explicitly...
Android: How can I validate EditText input?
... edited May 23 '17 at 11:47
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answered May 18 '10 at 9:28
NiksNiks
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How to get the caller's method name in the called method?
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Vim clear last search highlighting
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From http://twitter.com/jonbho/status/2194406821
" Clear highlighting on escape in normal mode
nnoremap <esc> :noh<return><esc>
nnoremap <esc>^[ <esc>^[
The second line is needed for mapping to the...
How do I display the current value of an Android Preference in the Preference summary?
This must come up very often.
34 Answers
34
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Swapping two variable value without using third variable
... 0011
//So *x is 0011
Should this be used?
In general cases, no. The compiler will optimize away the temporary variable and given that swapping is a common procedure it should output the optimum machine code for your platform.
Take for example this quick test program written in C.
#include &...