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Is there a way to use shell_exec without waiting for the command to complete?
...ve.
You can find the detailed explanation here: http://oytun.co/response-now-process-later
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Pragma in define macro
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If you're using c99 or c++0x there is the pragma operator, used as
_Pragma("argument")
which is equivalent to
#pragma argument
except it can be used in macros (see section 6.10.9 of the c99 standard, or 16.9 of the c++0...
How does python numpy.where() work?
..., True, True]], dtype=bool)
This is the same reason why something like if x > 5: raises a ValueError if x is a numpy array. It's an array of True/False values, not a single value.
Furthermore, numpy arrays can be indexed by boolean arrays. E.g. x[x>5] yields [6 7 8], in this case.
Hones...
Convert to binary and keep leading zeros in Python
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Very nice. I never would have known that's what you meant from explanation alone. But now I've seen your example, I'll probably never forget it. Cheers.
– voices
May 11 '19 at 20:04
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How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
...eckout B
$ echo 'B' > file2
$ git commit -m 'change on branch B' file2
Now, let's try the strategy option (doesn't really matter if we use theirs or ours for this explanation):
$ git merge -X ours A
$ cat file*
A
B
original
We end up with a merge of both branches' contents (branch "strategy-opt...
What's the best way to trim std::string?
...pp>
std::string str("hello world! ");
boost::trim_right(str);
str is now "hello world!". There's also trim_left and trim, which trims both sides.
If you add _copy suffix to any of above function names e.g. trim_copy, the function will return a trimmed copy of the string instead of modifying...
How to open link in new tab on html?
..._target.asp
(Note: I previously suggested blank instead of _blank because, if used, it'll open a new tab and then use the same tab if the link is clicked again. However, this is only because, as GolezTrol pointed out, it refers to the name a of a frame/window, which would be set and used when the li...
SQL Server Index Naming Conventions [closed]
...s/1401572/… KEY and INDEX are synonyms. So it should be no need to have different prefixes for unique keys and unique indexes?
– skjerdalas
Dec 17 '14 at 10:19
2
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Average of 3 long integers
... can give a result that is off by one, namely rounded up rather than down, if negative values for the variables are allowed. For instance if x,y are positive multiples of 3, and z is -2, you get (x+y)/3 which is too much.
– Marc van Leeuwen
May 30 '14 at 15:15
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When to use volatile with multi threading?
...e semantics on volatile variables.
[Update for C++11]
The C++11 Standard now does acknowledge multithreading directly in the memory model and the lanuage, and it provides library facilities to deal with it in a platform-independant way. However the semantics of volatile still have not changed. v...