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How to get a string after a specific substring?
...han the one returned, i.e. substrings which are not necessary to create in order to derive the result.
– shx2
Nov 9 '19 at 16:14
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What does multicore assembly language look like?
...t;mutex> and <atomic> headers, and in particular with std::memory_order. I'm not sure if it covers all possible memory semantics achievable, but it just might.
The more subtle semantics are particularly relevant in the context of lock free data structures, which can offer performance benef...
How to use GROUP_CONCAT in a CONCAT in MySQL
...B', 8);
INSERT INTO test VALUES (2, 'C', 9);
SELECT ID, GROUP_CONCAT(NAME ORDER BY NAME ASC SEPARATOR ',')
FROM (
SELECT ID, CONCAT(NAME, ':', GROUP_CONCAT(VALUE ORDER BY VALUE ASC SEPARATOR ',')) AS NAME
FROM test
GROUP BY ID, NAME
) AS A
GROUP BY ID;
SQL Fiddle: http://sqlfiddle.com/#!2/b...
Sorting list based on values from another list?
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good solution! But it should be: The list is ordered regarding the first element of the pairs, and the comprehension extracts the 'second' element of the pairs.
– MasterControlProgram
Oct 6 '17 at 14:31
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Is git good with binary files?
...e git community book (book.git-scm.com/7_how_git_stores_objects.html): "In order to save that space, Git utilizes the packfile. This is a format where Git will only save the part that has changed in the second file, with a pointer to the file it is similar to."
– Wayne Conrad
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What is the id( ) function used for?
...every time you find it.
The numbers from -5 to 256 have id's in increasing order and differ by 16.
The number returned by id() function is a unique id given to each item stored in memory and it is analogy wise the same as the memory location in C.
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Convert decimal to binary in python [duplicate]
...ved by switching to // (truncating division); the former, by switching the order of the two strings being summed in the return. Not that recursion makes any sense here anyway (bin(n)[2:] -- or a while loop if you're stuck on some old version of Python -- will be much better!).
–...
Label Alignment in iOS 6 - UITextAlignment deprecated
...nstants file -- which must itself include #import <UIKit/UIKit.h> in order to ever know about the NSText... constants)…
#ifdef NSTextAlignmentCenter // iOS6 and later
# define kLabelAlignmentCenter NSTextAlignmentCenter
# define kLabelAlignmentLeft NSTextAlignmentLeft
# define...
Shell script while read line loop stops after the first line
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In Django, how does one filter a QuerySet with dynamic field lookups?
... query criteria (such as just people who completed a certain workshop). In order for the survey element to be re-usable, I needed for the person creating the survey question to be able to attach those criteria to that question (don't want to hard-code the query into the app).
The solution I came u...