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Running a cron job on Linux every six hours
...got a *, and you've too many fields. It's the hour you need to care about
0 */6 * * * /path/to/mycommand
This means every sixth hour starting from 0, i.e. at hour 0, 6, 12 and 18 which you could write as
0 0,6,12,18 * * * /path/to/mycommand
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select count(*) from table of mysql in php
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202
You need to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
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answered Nov 14 '09 at 17:58
MortyMorty
1,2181111 silver badges1010 bronze badges
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
...on.
Base JavaScript language:
Access characters in strings: 'string'[0] isn’t supported in IE as it’s not in the original JavaScript specifications. Use 'string'.charAt(0) or 'string'.split('')[0] noting that accessing items in arrays is significantly faster than using charAt with strings ...
html select option separator
... box drawing character is ─ fileformat.info/info/unicode/char/2500/index.htm and there is also a heavier option at ━ fileformat.info/info/unicode/char/2501/index.htm
– JeffG
Oct 10 '14 at 14:21
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HTML: How to limit file upload to be only images?
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answered Oct 13 '09 at 19:32
Ms2gerMs2ger
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LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
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470
Whenever you use SingleOrDefault, you clearly state that the query should result in at most a si...
Finding a substring within a list in Python [duplicate]
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edited Dec 7 '15 at 18:40
matt wilkie
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answer...
std::cin input with spaces?
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103
You have to use cin.getline():
char input[100];
cin.getline(input,sizeof(input));
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
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