More Perl Operators
There are many more operators in Perl besides the more basic ones.
Perl Operators 

Exponentation  Exponentational provides away to multiply a number to itself repeatedly 
Remainder  Retrieves the remainder resulting from division of one integer by another 
Unary Negation  Is a character in front of a single value, it is equivalent to multiplying the value by 1 
Integer Comparison  There are many comparison operators  see Perl Cheat Sheet, becareful when comparing floatingpoint numbers as rounding up may make numbers different 
String Comparison  There are many comparison operators  see Perl Cheat Sheet 
Logical  Can used to to check for multiply conditions like a ifelse statement, Shortcircuit evaluation means that in some circumstances if a part of the evaulation forces the outcome of the statement to be true or false regardless if the other part outcome if ( $age == 5  $age == 10 ) ## the second condition will not be checked of $age equals 5, the outcome will be true anyway 
BitManipulation  You can manipulate the binary digits (or bits) of an integer there are many bitmanipulation operators  see Perl Cheat Sheet 
Assignment  Associates or assigns a value to a variable, you can use the operator more than once in a single statement 
Autoincrement and autodecrement  The autoincrement and autodecrement is a third way to increment/decrement variables by 1, you can also increment/decrement strings. 
String concatenation  There are a number of operators that can effect strings  see Perl cheat sheet 
Repetition  Make multiple copies of a string and joins the copies together. 
Comma  Guarantees that a particular part of an expression is evaluated first 
Conditional  This is know as a tenary operator in other languages and is based on a ifelse statement 
Perl Operators Examples 

Exponentation  $x = 2 ** 4; # take four copies of two and multiply them (2 * 2 * 2 * 2 = 16) $ x = 2 ** 5; # this is the fraction 1/32 
Remainder  $x = 25 % 4; # 25 divided by 4 yields 6 with a remainder of 1, so $x = 1 
Unary Negation  $x =  5; # $x = 5; $x =  $y ; # $x = $y * 1; 
Integer Comparison  if ( $a == $b ) { .... } 
String Comparison  if ( $stringA eq $stringB ) { .... } if ( $stringA lt $stringB ) { .... } if ( $stringA gt $stringB ) { .... } if ( $stringA le $stringB ) { .... } if ( $stringA ge $stringB ) { .... } if ( $stringA ne $stringB ) { .... } if ( $stringA <cmp> $stringB ) { .... } 
Logical  if ( $age > 5 && $age < 17 ) { .... } if ( ! $x ) { .... } # true if $x is not zero and false if $x is 0; 
BitManipulation  $x = 124 & 99; # 01111100 (124) & 01100011 (99) = 01100000 (96) 
Assignment  $a = 5; # assign the value 5 to the variable $a $a += 5; # really means $a = $a + 5 $a *= 10; # really means $a = $a * 5 $a ^= 95; # really means $a = $a ^ 5 
Autoincrement and autodecrement  $a++ # postincrement ++$a # preincrement $a # postdecrement $a # predecrement 
String concatenation  $you_are_a = $potatoe . $head; # this concatenation variables $potatoe, $head into one string value 
Repetition  $strong_mint = "X" x 3; # procedues the string "XXX" 
Comma  $var1 += 1, $var2 = $var1; # the list of statements will be processed from left to right 
Conditional  $result = $var == 0 ? 14 : 7; # if $var equals 0 then $result = 14, if $var is not equal to 0 then # $result = 7 
Precedence
Operators are governed by a set of rules, these are called the 'rules of precedence', the precedence will determine the process statement order , highest being first, You can force the order of precedence by using brackets
Force Precedence  $result = 4 * ( 5 + 3 ); # Normally the mulitplication would be processed first, # but by using brackets we force the addition to be # processed first 
See Perl Cheat Sheet for a complete list of precedence.