struct Bool

Overview

Bool has only two possible values: true and false. They are constructed using these literals:

true  # A Bool that is true
false # A Bool that is false

Defined in:

bool.cr
primitives.cr
json/to_json.cr
yaml/to_yaml.cr

Constructors

Instance Method Summary

Instance methods inherited from struct Value

==(other) ==, dup dup

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, class class, dup dup, hash hash, inspect(io : IO)
inspect inspect, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json to_json, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ") to_pretty_json, to_s
to_s(io : IO) to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&block) try, unsafe_as(type : T.class) forall T unsafe_as

Constructor methods inherited from class Object

from_json(string_or_io, root : String) : self
from_json(string_or_io) : self from_json, from_yaml(string_or_io) : self from_yaml

Constructor Detail

def self.new(pull : JSON::PullParser) #

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def self.new(pull : YAML::PullParser) #

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Instance Method Detail

def !=(other : Bool) : Bool #

Returns true if self is not equal to other.


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def &(other : Bool) #

Bitwise AND. Returns true if this bool and other are true, otherwise returns false.

false & false # => false
false & true  # => false
true & false  # => false
true & true   # => true

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def ==(other : Bool) : Bool #

Returns true if self is equal to other.


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def ^(other : Bool) #

Exclusive OR. Returns true if this bool is different from other, otherwise returns false.

false ^ false # => false
false ^ true  # => true
true ^ false  # => true
true ^ true   # => false

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def clone #

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def hash #

Returns a hash value for this boolean: 0 for false, 1 for true.


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def to_json(json : JSON::Builder) #

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def to_s(io) #

Appends "true" for true and "false" for false to the given IO.


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def to_s #

Returns "true" for true and "false" for false.


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def to_yaml(yaml : YAML::Builder) #

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def |(other : Bool) #

Bitwise OR. Returns true if this bool or other is true, otherwise returns false.

false | false # => false
false | true  # => true
true | false  # => true
true | true   # => true

View source