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Boolean operators && and ||
...rter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) & ((-2:2) <= 0)
# [1] FALSE FALSE TRUE FALSE FALSE
The longer form evaluates left to right examining only the first element of each vector, so the above gives
((-2:2) >= 0) && ((-2:2) <...
How to limit UITableView row reordering to a section
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edited Jun 13 '12 at 20:40
community wiki
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“Insert if not exists” statement in SQLite
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edited Apr 13 '18 at 6:12
answered Oct 12 '13 at 17:38
Cy...
What is the most efficient way to store tags in a database?
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192
One item is going to have many tags. And one tag will belong to many items. This implies to me t...
How to use php serialize() and unserialize()
.... But how do you pass this array to Javascript?
Array ( [1] => elem 1 [2] => elem 2 [3] => elem 3 )
The answer is serialization. In case of PHP/Javascript, JSON is actually the better serialization format:
{ 1 : 'elem 1', 2 : 'elem 2', 3 : 'elem 3' }
Javascript can easily reverse thi...
error opening HPROF file: IOException: Unknown HPROF Version
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298
The hprof file you get from Android has android specific format. You should convert hprof file...
How do I determine the target architecture of static library (.a) on Mac OS X?
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244
Another option is lipo; its output is brief and more readable than otool's.
An example:
% li...
Do c++11 lambdas capture variables they don't use?
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2 Answers
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what does npm -D flag mean?
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edited Mar 25 '18 at 2:50
Pyves
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