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Regular expression \p{L} and \p{N}
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Apart from the fact that capturing parentheses were used, the REs will actually compile to the same thing (well, in any optimizing RE engine that supports the \p{…} escape sequence style in the first place).
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How can I generate a unique ID in Python? [duplicate]
...st a sequence generator. Statistically unique IDs typically are generated from random data; at least one class of UUIDs works that way.
– Glenn Maynard
Jul 31 '09 at 4:38
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How to grep (search) committed code in the Git history
...ou to use extended POSIX regex instead of searching for a string.
Example (from git log): git log -S"frotz\(nitfol" --pickaxe-regex
As Rob commented, this search is case-sensitive - he opened a follow-up question on how to search case-insensitive.
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Passing references to pointers in C++
...ope, not an anonymous string pointer. Regardless, both are likely correct from my perspective.
– kevinarpe
Jul 30 '16 at 14:01
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How to index into a dictionary?
...n implementation detail. The language specification includes ordered dicts from 3.7 onwards.)
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Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/PO
...in the case of character, it runs strptime first, then does the conversion from POSIXlt to POSIXct.
It makes sense that strptime is faster, because strptime only handles character input whilst the others try to determine which method to use from input type. It should also be a bit safer in that bei...
What does href expression do?
I have seen the following href used in webpages from time to time. However, I don't understand what this is trying to do or the technique. Can someone elaborate please?
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Piping command output to tee but also save exit code of command [duplicate]
...e variable is ephemeral, so even "echo"-ing it out will lose you the value from running the pipeline. Assign it to another variable unless you will access it immediately, and only once.
– Davor Cubranic
Sep 12 at 1:49
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How can I check the system version of Android?
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From SDK: "The user-visible version string. E.g., "1.0" or "3.4b5"." .... "3.4b5" how can I determine which version number is it ?
– davs
Mar 7 '12 at 15:17
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How can I create an error 404 in PHP?
...t's not good to REDIRECT to your 404 page, but you can INCLUDE the content from it with no problem. That way, you have a page that properly sends a 404 status from the correct URL, but it also has your "what are you looking for?" page for the human reader.
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