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ru.perl
- RU.PERL ----------------------------------------------------------------------
From : Sanyo Titaev 2:5070/66.1 17 Jul 2000 10:15:30
To : Michael Samanov
Subject : Time/Date
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16 Jul 28 15:58, Michael Samanov wrote to Sanyo Titaev:
ST>> undef($my_hash{$trash});
MS> Угадай с трех раз, чем отличается undef от delete в применении к
MS> элементу хэша.
и действительно
Sometimes people mistakenly try to use undef to remove an entry from a hash.
undef $hash{$key} and $hash{$key} = undef both make %hash have an entry with key
$key and value undef.
The delete function is the only way to remove a specific entry from a hash. Once
you've deleted a key, it no longer shows up in a keys list or an each iteration,
and exists will return false for that key.
Sanyo
--- GoldED/W32 3.0.1
* Origin: -=The Bulls=- mailto:tit@irk.ru (2:5070/66.1)
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