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一、条件判断
if - elsif - else
二、循环
while
util
for
foreach
do - while
do - util
goto, last, next, redo
三、单行条件
语法为statement keyword condexpr。其中keyword可为if、unless、while或until,如:
print ("This is zero.\n") if ($var == 0);
print ("This is zero.\n") unless ($var != 0);
print ("Not zero yet.\n") while ($var-- > 0);
print ("Not zero yet.\n") until ($var-- == 0);
虽然条件判断写在后面,但却是先执行的。
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原文地址:http://www.cnblogs.com/yiyi-xuechen/p/4421152.html