This is an automatically generated page and cannot be edited directly. Text in Composite pages, (URLs starting with 'routine' or 'syntax') can be edited by clicking on the link labeled 'in context', and editing the text there.

Exit this popup by pressing <Escape>, or clicking on X or on the background.

.=
Combined from primary sources listed below.

In Operators§

See primary documentation in context for infix .=

Calls the right-side method on the value in the left-side container, replacing the resulting value in the left-side container.

In most cases, this behaves identically to the postfix mutator, but the precedence is lower:

my $a = -5;
say ++$a.=abs;
# OUTPUT: «6␤» 
say ++$a .= abs;
# OUTPUT: «Cannot modify an immutable Int␤ 
#           in block <unit> at <tmp> line 1␤␤»