Perl技巧|Perl_获得字符串长度_length($var)

Perl_获得字符串长度_length($var)

【Perl技巧|Perl_获得字符串长度_length($var)】例:
my $var='\\'; #此处'与"括着的\\颜色一样
my $var1="\\";
my $len=length($var);
my $len1=length($var1);
print $len."\t".$len1."\n";
#输出1\t1\n
$var='\n'; #此处'与"括着的\\颜色不一样;
$var1="\n";
$len=length($var);
$len1=length($var1);
print $len."\t".$len1."\n";
#输出2\t1\n
$var='\''; #此处'与"括着的\\颜色一样;
$var1="\'";
$len=length($var);
$len1=length($var1);
print $len."\t".$len1."\n";
#输出1\t1\n
$var='\"'; #此处'与"括着的\\颜色不一样;
$var1="\"";
$len=length($var);
$len1=length($var1);
print $len."\t".$len1."\n";
#输出2\t1\n
$var='\; '; #此处'与"括着的\\颜色不一样;
$var1="\; ";
$len=length($var);
$len1=length($var1);
print $len."\t".$len1."\n";
#输出2\t1\n

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