字符串列表简写qw

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# qw 表示“quoted words”或者“quoted by whitespace”.
# qw中包含的字符串,当作单引号字符串处理.转义字符,空格等也就失去了意思.
# 分界符不可同时用,有开分界符就有一个对应的闭分界符.
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#!/usr/bin/perl -w
#其中分界符包含在如下事例中:
print qw(one two three),"\n";
print qw!one two three!,"\n";
print qw#one two three#,"\n";
print qw{one two three},"\n";
print qw[one two three],"\n";
print qw<one two three>,"\n";