« » Gap

postcircumfix « »

The rules for « » have not been written yet. Everything below is extracted rather than authored: the official documentation supplies the classification, and the interpreters were asked directly about the rest.

What is established #

Classification #

« » is parsed as a postcircumfix at the method call precedence level, left-associative.

That is level 2 of 27 on the ladder, counting from the tightest. Operators sharing a level bind equally; grouping among them is decided by associativity alone.

Shares its precedence level with #

[[ ]](/spec/rules/operators/postcircumfix-brackets/), { }, <>, < >, ., .&, .=, .^, .?, ."", .+, .*, ». / methodop >>., .postfix / .postcircumfix, .:<prefix operator>, .::.

These all bind equally tightly, so an expression mixing them groups by associativity alone.

What the interpreter said #

Raku++ does not parse this spelling. Asked to compile:

my %h = a => 1; my $k = "a"; sink(%h«$k»)

…it produced a parse error. Any rule written here would describe Raku the language rather than this implementation.

Covered upstream #

The official documentation has a section for this construct: docs.raku.org. Until the rules here are written, that is the better reference.