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001's Blog

2008-03-11

Programming in Perl

# 避免 undefined 警告
$foo = bar unless defined ($foo);

# 生成一个等差数列
perl -e 'for ($i=1; $i<=3; $i++) { printf "%5i\n", $i; }'; }'
Posted by Jian Zou at 3/11/2008 10:29:00 AM
Labels: Programming

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