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Sort an Array by keys based on another Array?
... It works nicely if you have string keys but not for the numerical one. PHP Docs: "If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original v...
Why do stacks typically grow downwards?
...item pushed onto the stack results in a decremented SP, not an incremented one).
10 Answers
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JavaScript: Object Rename Key
...thod ensures that the renamed property behaves identically to the original one.
Also, it seems to me that the possibility to wrap this into a function/method and put it into Object.prototype is irrelevant regarding your question.
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How do I undo 'git add' before commit?
...changes. This can come in handy when there are too many files to be listed one by one in a reasonable amount of time.
In old versions of Git, the above commands are equivalent to git reset HEAD <file> and git reset HEAD respectively, and will fail if HEAD is undefined (because you haven't yet ...
SOAP vs REST (differences)
...st tries to be) and the second is an architectural style. This is probably one of the sources of confusion around it, since people tend to call REST any HTTP API that isn't SOAP.
Pushing things a little and trying to establish a comparison, the main difference between SOAP and REST is the degree of...
iOS app error - Can't add self as subview
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Way back about iOS 4-something I saw something similar in one of our apps -- IIRC, if you popped animated and then immediately pushed animated the UI code would get badly mucked up. Ended up just changing to never do two animated push/pop operations back to back. Of course, all th...
Change one value based on another value in pandas
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One option is to use Python's slicing and indexing features to logically evaluate the places where your condition holds and overwrite the data there.
Assuming you can load your data directly into pandas with pandas.read_csv ...
When should you use a class vs a struct in C++?
...y) guaranteed to be laid out as though it were a C struct. Apart from this one exception though, the only difference is as stated.
– workmad3
Sep 18 '08 at 14:22
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Counting inversions in an array
...s.
While merging algorithm counts number of removed inversions (sorted out one might say).
The only moment when inversions are removed is when algorithm takes element from the right side of an array and merge it to the main array.
The number of inversions removed by this operation is the number of ...
Best way to select random rows PostgreSQL
...omplete table once.
For large tables this might not what you want as even one complete table scan might take to long.
A third proposal would be
select * from table where random() < 0.01 limit 1000;
This one stops the table scan as soon as 1000 rows have been found and therefore returns soone...