class X::Signature::Placeholder

Compilation error due to placeholders in a block with a signature

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class X::Signature::Placeholder does X::Comp { }

Compile time error thrown when a block has both an explicit signature and placeholder parameters.

For example

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sub f() { $^x }

dies with

text

===SORRY!===
Placeholder variable '$^x' cannot override existing signature

Methods §

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method placeholder(--> Str:D)

Returns the name of a placeholder that was used in a block that already had a signature.