Perl ABCScalar::Util - Utility for scalar values
Scalar::Util is a module that collects utilities related to scalar values.
# Using Scalar::Util use Scalar::Util 'looks_like_number';
Numerical functions
Use looks_like_number to determine if it is a number.
# Judgment of whether it is a numerical value $is_number = looks_like_number($num);
Other Scalar::Util functions
Introducing other functions of Scalar::Util.
| * Function name | *meaning |
| blessed | Find out if an object is breathed |
| refaddr | Returns the reference memory address |
| reftype | Returns the type of reference |
| weaken | Make the reference a weak reference |
| unweaken | Return reference to normal reference |
| isweak | Find out if the reference is a weak reference |
| looks_like_number | Whether it looks like a number |
Scalar::Util documentation for more information on Scalar::Util functions Please see a>.