Perl Debugged

4.2. The Hall of the Precedence

Perl has a complicated precedence ordering; it helps to be able to look it up quickly (fortunately, it's the first thing out of perldoc perlop). We reproduce that table here (Table 4-1) because we'll be referring to it.

Table 4-1. Perl Operator Precedence and Associativity

Associativity	Operators
Left	Terms and list operators (leftward)
Left	->
Nonassoc	++ --
Right	**
Right	! ~ \ and unary + and -
Left	=~ !~
Left	* / % x
Left	+ - .
Left	<< >>
Nonassoc	Named unary and file test operators
Nonassoc	< > <= >= lt gt le ge
Nonassoc	== != <=> eq ne cmp
Left	&
Left	| ^
Left	&&
Left	||
Nonassoc	.. …
Right	?:
Right	= op=
Left	, =>
Nonassoc	List operators (rightward)
Right	not
Left	and
Left	or xor

Associativity tells you ...