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Is there an exponent operator in C#?
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The C# language doesn't have a power operator. However, the .NET Framework offers the Math.Pow...
Unresolved specs during Gem::Specification.reset:
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I was seeing this issue by just running RSpec on its own. From what I understand, this means t...
“Conversion to Dalvik format failed with error 1” on external JAR
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How to filter SQL results in a has-many-through relation
...greSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 students, 24.000 club memberships (data copied from a similar database with real life data.)
Slight diversion from the naming schema in the question: student.id is student.stud_id and club.id is club.club_id here.
I named the queries a...
Resetting generator object in Python
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Another option is to use the itertools.tee() function to create a second version of your genera...
How can mixed data types (int, float, char, etc) be stored in an array?
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You can make the array elements a discriminated union, aka tagged union.
struct {
enum { ...
json_encode sparse PHP array as JSON array, not JSON object
...ng this behaviour because your array is not sequential - it has keys 0 and 2, but doesn't have 1 as a key.
Just having numeric indexes isn't enough. json_encode will only encode your PHP array as a JSON array if your PHP array is sequential - that is, if its keys are 0, 1, 2, 3, ...
You can reinde...
Max length for client ip address [duplicate]
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For IPv4, you could get away with storing the 4 raw bytes of the IP address (each of the numbe...
Detect IF hovering over element with jQuery
...(":hover"); // returns true or false
Example: http://jsfiddle.net/Meligy/2kyaJ/3/
(This only works when the selector matches ONE element max. See Edit 3 for more)
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Edit 1 (June 29, 2013): (Applicable to jQuery 1.9.x only, as it works with 1.10+, see next Edit 2)
This answer was the best solut...
Get fragment (value after hash '#') from a URL in php [closed]
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If you want to get the value after the hash mark or anchor as shown in a user's browser: This i...