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Perl Operators

Perl categorizes operators into two varieties. One for strings and the other for numericvariables.

String Operators

x - The returned string is the string on the left side of the operand repeated the

amount of times indicated by the right operand.

. - Appends one string to another.

, - valuates the left operand, then the right operand and returns the result of the

right operand!

"" - #ncrements the string by one value. The string $abc$ would become $abd$.

cmp - #f the left string is less than, e%ual to, or greater than the right string, the

values -&, ', or & are returned, respectively.

e% - True if the two strings are e%ual. ge - True if the left string is greater than or e%ual to the right string.

gt - True if the left string is greater than the right string.

le - True if the left string is less than or e%ual to the right string.

lt - True if the left string is less than the right string.

ne - True if the two strings are not the same.

Numeric Operators

" - Adds two operands.

- - (ubtracts one operand from another.

) - *ultiplies two operands. + - ivides one operand by another returning the %uotient.

- ivides one operand by another returning the remainder modulus/.

00 - 1ompares two operands, returning a boolean value of true if they are e%ual.

20 - 1ompares two operands, returning a boolean value of true if they are not

e%ual.

30 - 1ompares two operands returning a boolean value of true if the left operand

is less than or equalto the right operand.

3 - 4ess than comparison returning a boolean true value if the operand on the left

is less than the one on the right.

50 - 1ompares two operands returning a boolean value of true if the left operand

is greater than or equalto the right operand.

305 - A value of -&, "&, or ' is returned if the left operand is less than, greater

than, or e%ual to the operand on the right respectively.

66 - 4ogical A7.

88 - 4ogical O9.

6 - :itwise A7.

8 - :itwise O9.

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; - :itwise xx? is > times >

times >.

"0 - The value on the right is added to the value on the left. The expression a 0a"b is the same as a"0b.

-0 - The value on the right is subtracted from the value on the left. The expression

a 0 a-b is the same as a-0b.

x0 - The expression a0axb is the same as ax0b.

55 - :itwise shift shifting the bits in the left operand to the right by the number of

bits indicated by the right operand. 33 - :itwise shift shifting the bits in the left operand to the left by the number of

bits indicated by the right operand.

; - Ones complement.