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Read only file system on Android
...esn't work for me: Balazss-MBP:tools varh1i$ adb shell generic_x86_64:/ # mount -o rw,remount /system '/dev/block/vda' is read-only
– Balazs Varhegyi
Feb 8 '17 at 13:58
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How to avoid warning when introducing NAs by coercion
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to determine equality for two JavaScript objects?
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64 Answers
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Python strftime - date without leading 0?
...ove, this works in OS X 10.8.5 with Python 2.7.2, but not in Windows 7 Pro 64-bit with Python 2.7.3.
– Johan
Nov 8 '13 at 10:59
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How to concatenate a std::string and an int?
I thought this would be really simple but it's presenting some difficulties. If I have
23 Answers
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Skip certain tables with mysqldump
... Tested and used under MySQL 5.5.43 (for debian-linux-gnu (x86_64)) Thanks
– Abdel
Jul 17 '15 at 8:54
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Regular expression to match non-ASCII characters?
...pes can be transpiled to ES5 with a tool called regexpu. There's an online demo available here. As you can see in the demo, you can in fact match non-latin letters today with the following (horribly long) ES5 regular expression:
/(?:[A-Za-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0...
How to make MySQL handle UTF-8 properly
... @Kevin I think you misread that. I think the maximum row length is 64k. You can only make a utf8mb4 field 1/4 of that because it had to reserve that amount of space. So, even if it's ASCII you can only insert 16k characters.
– Tim Tisdall
Oct 22 '14 a...
How to get all possible combinations of a list’s elements?
... tuple(sorted(Counter(...).elements())) if you need it to be hashable)
Demo
>>> list(combinations(range(4)))
[set(), {3}, {2}, {2, 3}, {1}, {1, 3}, {1, 2}, {1, 2, 3}, {0}, {0, 3}, {0, 2}, {0, 2, 3}, {0, 1}, {0, 1, 3}, {0, 1, 2}, {0, 1, 2, 3}]
>>> list(combinations('abcd'))
[s...
Ordering by specific field value first
...ever know.
Second, pay attention to how FIELD() works: it returns the one-based index of the value - in the case of FIELD(priority, "core"), it'll return 1 if "core" is the value. If the value of the field is not in the list, it returns zero. This is why DESC is necessary unless you specify all p...