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
Constructors
Instance Method Summary
-
#!=(other : Bool) : Bool
Returns
true
ifself
is not equal to other. -
#&(other : Bool) : Bool
Bitwise AND.
-
#==(other : Bool) : Bool
Returns
true
ifself
is equal to other. -
#^(other : Bool) : Bool
Exclusive OR.
- #clone : Bool
- #hash(hasher)
- #to_json(json : JSON::Builder)
-
#to_s(io : IO) : Nil
Appends
"true"
fortrue
and"false"
forfalse
to the given IO. -
#to_s : String
Returns
"true"
fortrue
and"false"
forfalse
. -
#to_unsafe : LibC::Int
Returns an integer derived from the boolean value, for interoperability with C-style booleans.
- #to_yaml(yaml : YAML::Nodes::Builder)
-
#|(other : Bool) : Bool
Bitwise OR.
Instance methods inherited from struct Value
==(other : JSON::Any)==(other : YAML::Any)
==(other) ==, dup dup
Instance methods inherited from class Object
! : Bool
!,
!=(other)
!=,
!~(other)
!~,
==(other)
==,
===(other : JSON::Any)===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash
hash(hasher) hash, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) 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 : String
to_s(io : IO) : Nil to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as
Class methods inherited from class Object
from_json(string_or_io, root : String)from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml
Constructor Detail
Instance Method Detail
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
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
Appends "true"
for true
and "false"
for false
to the given IO.
Returns an integer derived from the boolean value, for interoperability with C-style booleans.
The value is 1
for true
and 0
for false
.
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