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Lock, mutex, semaphore… what's the difference?
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PeterPeter
32.2k3232 gold badges134134 silver badges182182 bronze badges
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Restarting cron after changing crontab file?
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632
No.
From the cron man page:
...cron will then examine the modification time on all crontab...
Renaming or copying files and folder using NERDTree on Vim. Is it possible?
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Jeremy Mack
4,97722 gold badges2323 silver badges2222 bronze badges
answered Mar 14 '10 at 12:30
daviddavid
1,...
How to throw a C++ exception
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379
Simple:
#include <stdexcept>
int compare( int a, int b ) {
if ( a < 0 || b <...
What does “not run” mean in R help pages?
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3
... how did I not know about this function?
– Matt Parker
Sep 21 '09 at 14:41
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ElasticSearch - Return Unique Values
... "doc_count" : 244812
}, {
"key" : "11",
"doc_count" : 136794
}, {
"key" : "12",
"doc_count" : 32312
} ]
}
}
}
The size parameter within the aggregation specifies the maximum number of terms to include in the aggregation result. If you need all resu...
Postgres: How to do Composite keys?
... tag1 VARCHAR(20),
tag2 VARCHAR(20),
tag3 VARCHAR(20),
PRIMARY KEY(question_id, tag_id)
);
NOTICE: CREATE TABLE will create implicit sequence "tags_tag_id_seq" for serial column "tags.tag_id"
NOTICE: CREATE TABLE / PRIMARY KEY will creat...
Unpivot with column name
...inkenlight
659k6969 gold badges945945 silver badges13551355 bronze badges
answered Sep 27 '13 at 16:48
Taryn♦Taryn
216k5050 gold...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
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135
int may be as small as 16 bits on some platforms. It may not be sufficient for your applicatio...
Regex lookahead, lookbehind and atomic groups
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