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Perl in a Nutshell

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Standard Modules
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$gm = gmtime()

Overrides the core gmtime function. The Time::tm object returned has methods with the same names as the structure fields they return. That is, to return the field mon, use the mon method:

use Time::gmtime;
$gm = gmtime();
print $gm->mon;
The field names (and therefore the method names) are the same as the names of the fields in the tm structure in the C file time.h: sec, min, hour, mday, mon, year, wday, yday, and isdst. You can access the fields either with the methods or by importing the fields into your namespace with the :FIELDS import tag and prepending tm_ to the method name (for example, $tm_mon).

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8.159 Time::gmtimeBook IndexReference: gmctime