note
gmpassos
<code>
print $a+$ref_b; #coerce reference into number
Those are both scalars. Not a type conversion.
</code>
Humm, no! To make any arithmetic operation we need to convert the string (that are just a sequence of bytes), into numbers, where we use 4 bytes (32 bits processor) to make the calculation. (this is standart calculation ok!)
<p>
The wonderful job that Perl does for us, with speed, is to convert automatically all the boolean, integer, floating and string types with a single type, SCALAR.
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<p>
Graciliano M. P.<br>
"Creativity is the expression of liberty".
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