Bool
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.crprimitives.cr
json/to_json.cr
yaml/to_yaml.cr
Class Method Summary
Instance Method Summary
- #!=(other : Bool) : Bool
Returns
trueifselfis not equal to other. - #&(other : Bool)
Bitwise AND.
- #==(other : Bool) : Bool
Returns
trueifselfis equal to other. - #^(other : Bool)
Exclusive OR.
- #clone
- #hash
Returns a hash value for this boolean: 0 for
false, 1 fortrue. - #to_json(json : JSON::Builder)
- #to_s(io)
Appends
"true"fortrueand"false"forfalseto the given IO. - #to_s
Returns
"true"fortrueand"false"forfalse. - #to_yaml(yaml : YAML::Builder)
- #|(other : Bool)
Bitwise OR.
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
Class methods inherited from class Object
from_json(string_or_io, root : String) : selffrom_json(string_or_io) : self from_json, from_yaml(string_or_io) : self from_yaml
Class Method Detail
def self.new(pull : JSON::PullParser)Source
def self.new(pull : YAML::PullParser)Source
Instance Method Detail
def &(other : Bool)Source
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
def ^(other : Bool)Source
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
def cloneSource
def hashSource
Returns a hash value for this boolean: 0 for false, 1 for true.
def to_json(json : JSON::Builder)Source
def to_s(io)Source
Appends "true" for true and "false" for false to the given IO.
def to_sSource
Returns "true" for true and "false" for false.
def to_yaml(yaml : YAML::Builder)Source
def |(other : Bool)Source
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
© 2012–2017 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.22.0/Bool.html
