How to convert a string to a number (float) in Perl

Question

How do I convert a string to number in Perl?

Example:

$str = '10.0500000';
$number = $str * 1;  # 10.05

Is there another standard way to get 10.05 from '10.0500000' instead of multiplying with one?

Answer 1

edit 2020: Answer is wrong, see comment below. I am not permitted to delete an accepted answer.

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I am answering the literal question. Perhaps you want to format the number for display.

Both expressions

sprintf '%.2f', '10.0500000'
sprintf '%.2f', 10.0500000

return the string 10.05.