Equality Operators and Numeric Values

   

Operator    Example                      Meaning
==          $num1 == $num2               $num1 is equal to $num2
!=          $num1 != $num2               $num1 is not equal to $num2
<=>         $num1 <=> $num2              $num1 is compared to $num2 with a signed return; 
                                         1 if $num1 is greater than $num2, 
                                         0 if $num1 is equal to $num2, and 
                                         -1 if $num1 is less than $num2

1.	Compare integer value
2.	Compare string value
3.	Compare the first four decimal places
4.	Comparing Numbers for Equality
5.	Comparing Numbers for Inequality
6.	Equality Operators and String Values
7.	If not equal
8.	Integer-comparison operators.
9.	Not equals operator: ne
10.	Perl's operators for numeric comparisons
11.	String comparison operator
12.	String- and numeric-comparison operators.
13.	Use eq to compare strings
14.	Using eq in statement
15.	Using ne in if statement
16.	cmp with or
17.	eq, ne, lt, gt operators
18.	three-way-comparison becomes cmp.
19.	<=> returns 0, -1 , or 1
20.	Relational Operators and Numeric Values
21.	Comparison Operators listing
22.	Don't use == when you should use eq!
23.	Relational Operators and String Values
24.	Relational Operators demo
25.	The numeric comparison operator evaluates its operands

Equality Operators and Numeric Values : Comparison Operators « Language Basics « Perl

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