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How can I define a composite primary key in SQL?
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edited Jul 12 '09 at 15:48
answered Jul 10 '09 at 15:46
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Byte array to image conversion
...en for the lifetime of the Image." See also stackoverflow.com/questions/3290060/…
– RenniePet
Jan 9 '13 at 10:21
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python dataframe pandas drop column using int
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edited Feb 16 '16 at 10:48
frederikf
333 bronze badges
answered Nov 30 '13 at 15:06
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Creating a new directory in C
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#include <sys/stat.h>
#include <unistd.h>
struct stat st = {0};
if (stat("/some/directory", &st) == -1) {
mkdir("/some/directory", 0700);
}
You can see the manual of these functions with the man 2 stat and man 2 mkdir commands.
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Passing command line arguments in Visual Studio 2010?
...t how to pass command line arguments to my main function in Visual Studio 2010 Express Edition. I want to debug - how do these command line arguments work?
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Associative arrays in Shell scripts
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To add to Irfan's answer, here is a shorter and faster version of get() since it requires no ite...
Using reflect, how do you set the value of a struct field?
...omewhere!
– cc young
Jun 19 '11 at 10:57
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How to check for a valid Base64 encoded string
...e64 string, as it will only be composed of characters 'A'..'Z', 'a'..'z', '0'..'9', '+', '/' and it is often padded at the end with up to three '=', to make the length a multiple of 4. But instead of comparing these, you'd be better off ignoring the exception, if it occurs.
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MySQL: Set user variable from result of query
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| 123456 | 5 |
| 111111 | 5 |
+--------+-------+
2 rows in set (0.00 sec)
Note that for SET, either = or := can be used as the assignment operator. However inside other statements, the assignment operator must be := and not = because = is treated as a comparison operator in non-SET stat...
Installing a dependency with Bower from URL and specify version
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