Type::Tiny::Enum

Status

This module is covered by the Type-Tiny stability policy.

Description

Enum type constraints.

This package inherits from Type::Tiny; see that for most documentation. Major differences are listed below:

Attributes

values: Arrayref of allowable value strings. Non-string values (e.g. objects with overloading) will be stringified in the constructor.
constraint: Unlike Type::Tiny, you cannot pass a constraint coderef to the constructor. Instead rely on the default.
inlined: Unlike Type::Tiny, you cannot pass an inlining coderef to the constructor. Instead rely on the default.
parent: Parent is always Types::Standard::Str, and cannot be passed to the constructor.
unique_values: The list of values but sorted and with duplicates removed. This cannot be passed to the constructor.

Methods

as_regexp

Returns the enum as a regexp which strings can be checked against. If you're checking a lot of strings, then using this regexp might be faster than checking each string against

  my $enum  = Type::Tiny::Enum->new(...);
  my $check = $enum->compiled_check;
  my $re    = $enum->as_regexp;
  
  # fast
  my @valid_tokens = grep $enum->check($_), @all_tokens;
  
  # faster
  my @valid_tokens = grep $check->($_), @all_tokens;
  
  # fastest
  my @valid_tokens = grep /$re/, @all_tokens;

You can get a case-insensitive regexp using $enum->as_regexp('i').

Overloading

Arrayrefification calls values.

Bugs