TITLE

Object hashes with a limitation on the type of values


SUBTITLE

The C<QuantHash> role provides the basic functionality shared by the
L<C<Setty>|/type/Setty>, L<C<Baggy>|/type/Baggy> and L<C<Mixy>|/type/Mixy> roles.  These
provide object hashes whose values are limited in some way.


C<QuantHashes> are what L<set operators|/language/setbagmix> use internally.


head

Coerces the C<QuantHash> object to a L<C<Hash>|/type/Hash> (by stringifying the objects
for the keys) with the values of the hash limited to the same limitation as
C<QuantHash>, and returns that.


Coerces the C<QuantHash> object to a L<C<Hash>|/type/Hash> (by stringifying the objects
for the keys) without any limitations on the values, and returns that.


Available as of the 2021.02 release of the Rakudo compiler.


Coerces the C<QuantHash> object to a L<C<Map>|/type/Map> (by stringifying the objects
for the keys) without any limitations on the values, and returns that.


Returns the type of value a key of this subclass of C<QuantHash> may have. This
is typically L<C<Mu>|/type/Mu>, which is also the default for punned QuantHashes.


Returns the object as a L<C<Capture>|/type/Capture> by previously coercing it to a L<C<Hash>|/type/Hash>.


Returns a list of L<C<Pair>|/type/Pair> objects of all keys and values in the
QuantHash.


Coerce the C<QuantHash> object to the equivalent object that uses the L<C<Setty>|/type/Setty>
role. Note that for L<C<Mixy>|/type/Mixy> type coercion items with negative values will be skipped.


my %b is Bag = one => 1, two => 2;
say %b.Setty; # OUTPUT: «Set(one two)␤»
my %m is Mix = one => 1, minus => -1;
say %m.Setty; # OUTPUT: «Set(one)␤»


Coerce the C<QuantHash> object to the equivalent object that uses the L<C<Baggy>|/type/Baggy>
role. Note that for L<C<Mixy>|/type/Mixy> type coercion items with negative values will be skipped.


my %s is Set = <one two>;
say %s.Baggy; # OUTPUT: «Bag(one two)␤»
my %m is Mix = one => 1, minus => -1;
say %m.Baggy; # OUTPUT: «Bag(one)␤»


Coerce the C<QuantHash> object to the equivalent object that uses the L<C<Mixy>|/type/Mixy>
role.


my %s is Set = <one two>;
say %s.Mixy; # OUTPUT: «Mix(one two)␤»
my %b is Bag = one => 1, two => 2;
say %b.Mixy; # OUTPUT: «Mix(one two(2))␤»


root

Object that supports looking up values by key


role Associative


Collection of distinct weighted objects


role Baggy


Immutable buffer for binary data ('Binary Large OBject')


role Blob


Mutable buffer for binary data


role Buf


Interface for container objects that can be iterated over


role Iterable


Generic API for producing a sequence of values


role Iterator


Collection of distinct objects with Real weights


role Mixy


Object that supports looking up values by index


role Positional


Failover for binding to a Positional


role PositionalBindFailover


Common methods of sequences


role Sequence


Collection of distinct objects


role Setty


para

L<Examples| file:../examples/index.podlite>


L<Download |file:../download/index.podlite>


React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


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role QuantHash


Performs batches of work in parallel without respecting original
order.


class RaceSeq does Iterable does Sequence { }


A C<RaceSeq> is the intermediate object used when
L<C<race>|/routine/race> is invoked on a L<C<Seq>|/type/Seq>. In general,
it's not intended for direct consumption by the developer.


method iterator(RaceSeq:D: --> Iterator:D)


method grep(RaceSeq:D: $matcher, *%options)


Applies C<grep> to the C<RaceSeq> similarly to how it would do it on a L<C<Seq>|/type/Seq>.


code

When you use C<race> on a L<C<Seq>|/type/Seq>, this is the method that is actually called.


method map(RaceSeq:D: $matcher, *%options)


Uses maps on the C<RaceSeq>, generally created by application of C<.race> to
a preexisting L<C<Seq>|/type/Seq>.


Inverts the C<RaceSeq> created from a L<C<Seq>|/type/Seq> by C<.race>.


Creates a L<C<HyperSeq>|/type/HyperSeq> object out of the current one.


Converts the object to a L<C<Seq>|/type/Seq> and returns it.


Sinks the underlying data structure, producing any side effects.


Native integer


class int


Dual value number and string


class Allomorph


Thing/object


class Any


Abstract representation of a piece of source code


class AST


Integer (native storage at the platform's atomic operation size)


class atomicint


Code object with its own lexical scope


class Block


Captures the current frame state


class CallFrame


Code object


class Code


Encapsulates instructions about how strings should be sorted


class Collation


Information related to the compiler that is being used


class Compiler


Complex number


class Complex


Dual value complex number and string


class ComplexStr


Object that can be treated as both a string and number


class Cool


Scheduler that synchronously executes code on the current thread


class CurrentThreadScheduler


Calendar date


class Date


Calendar date with time


class DateTime


Distribution::Hash


class Distribution::Hash


Distribution::Locally


class Distribution::Locally


Distribution::Path


class Distribution::Path


Every one of the resources installed with a distribution


class Distribution::Resource


Length of time


class Duration


Management of available encodings


class Encoding::Registry


Rational number (arbitrary-precision)


class FatRat


Rakudo-specific class that wraps around code in other languages (generally NQP)


class ForeignCode


Convert values to a string given a format specification


class Format


Produce Callable for given format specification


class Formatter


An object for performing batches of work in parallel with ordered
output


class HyperSeq


Placeholder for multiple unspecified values/arguments


class HyperWhatever


Specific moment in time


class Instant


Integer (arbitrary-precision)


class Int


Dual value integer and string


class IntStr


Logical superposition of values


class Junction


Tagged location in the source code


class Label


A non-blocking, non-re-entrant, mutual exclusion lock


class Lock::Async


Compile-time routine


class Macro


Member function


class Method


The root of the Raku type hierarchy.


class Mu


Absence of a value or a benign failure


class Nil


Floating-point number


class Num


Number or object that can act as a number


role Numeric


Dual value floating-point number and string


class NumStr


Unique identification for an object


class ObjAt


Element of a Signature


class Parameter


Perl related information


class Perl


Item container with custom storage and retrieval


class Proxy


Raku related information


class Raku


Namespace for holding RakuAST related classes


package RakuAST


Contains the information of a RakuDoc block


class RakuAST::Doc::Block


Contains the declarator docs of a RakuAST object


class RakuAST::Doc::Declarator


Contains the information about RakuDoc markup


class RakuAST::Doc::Markup


Contains the information about a RakuDoc paragraph


class RakuAST::Doc::Paragraph


Rational number (limited-precision)


class Rat


Dual value rational number and string


class RatStr


Code object with its own lexical scope and return handling


class Routine


Holds all information needed to unwrap a wrapped routine.


class Routine::WrapHandle


A mostly transparent container used for indirections


class Scalar


Parameter list pattern


class Signature


String of characters


class Str


Contains the result of a string transformation.


class StrDistance


Subroutine


class Sub


Member function that is not inherited by subclasses


class Submethod


Collect performance state for analysis


class Telemetry


Instrument for collecting Thread data


class Telemetry::Instrument::Thread


Instrument for collecting ThreadPoolScheduler data


class Telemetry::Instrument::ThreadPool


Instrument for collecting getrusage data


class Telemetry::Instrument::Usage


Performance data over a period


class Telemetry::Period


Telemetry instrument pod


class Telemetry::Sampler


Unsigned integer (arbitrary-precision)


Subset UInt


class RaceSeq


The Raku Knowledge Base


role QuantHash

Methods

method hash

method Hash

method Map

method of

method keyof

method Capture

method list

method Setty

method Baggy

method Mixy

See Also