Perl变量及用法
Variable types and their uses| Type | Sigil | Example | Is a Name For |
|------------+-------+-----------+----------------------------------------|
| Scalar | $ | $cents | An individual value (number or string) |
| Array | @ | @large | A list of values, keyed by number |
| Hash | % | %interest | A group of values, keyed by string |
| Subroutine | & | &how | A callable chunk of Perl code |
| Typeglob | * | *struck | Everything named struck |
# for example
my $phrase = "Howdy, world!\n";# Create a variable
print $phrase; # Print the variable
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