perl6/doc/lib/X/Redeclaration
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(title) class X::Redeclaration
class X::Redeclaration does X::Comp { }
Thrown when a symbol (variable, routine, type, paramater, ...) is redeclared.
Note that redeclarations are generally fine in an inner scope, but if the
redeclaration appears in the same scope as the original declaration,
it usually indicates an error and is treated as one.
Examples
my $x; my $x
===SORRY!===
Redeclaration of symbol $x
sub f() { }
sub f() { }
===SORRY!===
Redeclaration of routine f
But those are fine
my $x;
sub f() {
my $x; # not a redeclaration,
# because it's in an inner scope
sub f() { }; # same
}
Methods
(head2) symbol
Returns the name of the symbol that was redeclared.
what
Returns the kind of symbol that was redeclared. Usually symbol , but can
also be routine , type etc.
postfix
Returns a string that is attached to the end of the error message. It
usually explains the particular problem in more detail, or suggests
way to fix the problem.
