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PHP: How to use array_filter() to filter array keys?
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I'm curious if this is more efficient than my solution though? It's definitely more elegant :)
– GWW
Nov 23 '10 at 19:48
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Why should casting be avoided? [closed]
...he answers are really quite different between the three. Discussion of C++ more or less implies discussion of C casts as well, and that gives (more or less) a fourth answer.
Since it's the one you didn't mention explicitly, I'll start with C. C casts have a number of problems. One is that they can ...
How many threads is too many?
... no way to determine the "optimal" number from this. Indeed you will find more threads cause more resource contention and thus the number of active threads will increase.
– Andrew Grant
Jan 27 '09 at 1:34
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Heap vs Binary Search Tree (BST)
...sed trees, BST only pointer-based trees. So for the heap we can choose the more space efficient array implementation, if we can afford occasional resize latencies.
binary heap creation is O(n) worst case, O(n log(n)) for BST.
Advantage of BST over binary heap
search for arbitrary elements is O(l...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...by DB implementation, but generally, VARCHAR (or NVARCHAR) uses one or two more bytes of storage (for length or termination) in addition to the actual data. So (assuming you are using a one-byte character set) storing the word "FooBar"
CHAR(6) = 6 bytes (no overhead)
VARCHAR(100) = 8 bytes (2 byt...
What's the best UI for entering date of birth? [closed]
...he problem with most datepickers is that it's painfull to go back 30/40/or more years.
– UnkwnTech
Dec 4 '08 at 10:36
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How do I make the first letter of a string uppercase in JavaScript?
...ve function with that same name in future).
...and then, there is so much more to this question when you consider internationalisation, as this astonishingly good answer (buried below) shows.
If you want to work with Unicode code points instead of code units (for example to handle Unicode characte...
How to merge two arrays in JavaScript and de-duplicate items
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How to remove leading and trailing zeros in a string? Python
...ling zeros, use .rstrip instead (and .lstrip for only the leading ones).
[More info in the doc.]
You could use some list comprehension to get the sequences you want like so:
trailing_removed = [s.rstrip("0") for s in listOfNum]
leading_removed = [s.lstrip("0") for s in listOfNum]
both_removed = [...
Are memory leaks ever ok? [closed]
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