This article introduces Perl string comparison and integer comparison.
Perl strings can be divided into single quotes and double quotes in Perl language. So how to compare Perl strings?
Please see the detailed introduction of this article:
This article will focus on the comparison of Perl strings and integers.
The comparison of arithmetic operators has a relationship of greater than, less than, equality, not equality,
Perl string comparison is no exception.
Here is a detailed introduction to you:
1. String comparison operator
Operator Description
lt less than
gt greater than
eq equals
le is less than or equal to
ge is greater than or equal to
ne does not equal
cmp comparison, return 1,0,or-1
2. Integer comparison operator
Operator Description
< less than
> Greater than
== equal to
<= Less than or equal to
>= greater than or equal to
!= does not equal
<=> Compare, return 1, 0, or -1
PS:
The integer comparison operator is a numerical comparison,
When used, both left and right operands will be converted into numbers.