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How do I get the n-th level parent of an element in jQuery?
...ents() returns the ancestor elements ordered from the closest to the outer ones, you can chain it into eq():
$('#element').parents().eq(0); // "Father".
$('#element').parents().eq(2); // "Great-grandfather".
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How to delete a certain row from mysql table with same column values?
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This only deletes one row. If there were 3 with this user and product id then 2 would remain.
– Rob
Aug 22 '13 at 10:48
10
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When is it right for a constructor to throw an exception?
... into a usable state. There are basically two schools of thought on this.
One group favors two-stage construction. The constructor merely brings the object into a sleeper state in which it refuses to do any work. There's an additional function that does the actual initialization.
I've never unders...
How to find/identify large commits in git history?
...`echo -e "\n"`
output="${output}\n${size},${compressedSize},${other}"
done
echo -e $output | column -t -s ', '
That will give you the object name (SHA1sum) of the blob, and then you can use a script like this one:
Which commit has this blob?
... to find the commit that points to each of...
When to use Comparable and Comparator
...ment Comparable if that is the clear natural way to sort the class, and anyone would need to sort the class would generally want to do it that way.
If, however, the sorting was an unusual use of the class, or the sorting only makes sense for a specific use case, then a Comparator is a better option...
Switch statement: must default be the last case?
...tements. Especially interesting is 6.8.1.4, which enables the already mentioned Duff's Device:
Any statement may be preceded by a
prefix that declares an identifier as
a label name. Labels in themselves do
not alter the flow of control, which
continues unimpeded across them.
Edit: The...
What is the best way to use a HashMap in C++?
... as the map grows larger. For example, if it takes 1 microsecond to lookup one of 1 million items, then you can expect it to take around 2 microseconds to lookup one of 2 million items, 3 microseconds for one of 4 million items, 4 microseconds for one of 8 million items, etc.
From a practical viewp...
Coarse-grained vs fine-grained
...oken into feet.
Coarse-grained systems consist of
fewer, larger components than
fine-grained systems; a coarse-grained
description of a system regards large
subcomponents while a fine-grained
description regards smaller components
of which the larger ones are composed.
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Where to put include statements, header or source?
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There's been quite a bit of disagreement about this over the years. At one time, it was traditional that a header only declare what was in whatever module it was related to, so many headers had specific requirements that you #include a certain set of headers (in a specific order). Some extremely...
Git rebase: conflicts keep blocking progress
...I want to get into v4. So, in v4, I tried to do a rebase from master, and one file keeps screwing things up: a one-line text file, that contains the version number. This file is app/views/common/version.txt , which before rebasing contains this text:
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