abstract class Class
Defined in:
class.crprimitives.cr
Constructors
-
.cast(other) : self
Casts other to this class.
Class Method Summary
- .==(other : Class)
- .===(other)
- .clone
- .dup
- .hash
- .inspect(io)
-
.name : String
Returns the name of this class.
-
.nilable?
Returns
trueif this class isNil. - .to_s(io)
-
.|(other : U.class) forall U
Returns the union type of
selfand other.
Instance Method Summary
- #==(other : Class)
- #===(other)
-
#cast(other) : self
Casts other to this class.
- #clone
- #dup
- #hash
- #inspect(io)
-
#name : String
Returns the name of this class.
-
#nilable?
Returns
trueif this class isNil. - #to_s(io)
-
#|(other : U.class) forall U
Returns the union type of
selfand other.
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) : selffrom_json(string_or_io) : self from_json, from_yaml(string_or_io) : self from_yaml
Constructor Detail
def self.cast(other) : self
#
Casts other to this class.
This is the same as using as, but allows the class to be passed around as
an argument. See the
documentation on as
for more information.
klass = Int32
number = [99, "str"][0]
typeof(number) # => (String | Int32)
typeof(klass.cast(number)) # => Int32Class Method Detail
def self.nilable?
#
Returns true if this class is Nil.
Int32.nilable? # => false
Nil.nilable? # => true
def self.|(other : U.class) forall U
#
Returns the union type of self and other.
Int32 | Char # => (Int32 | Char)Instance Method Detail
def cast(other) : self
#
Casts other to this class.
This is the same as using as, but allows the class to be passed around as
an argument. See the
documentation on as
for more information.
klass = Int32
number = [99, "str"][0]
typeof(number) # => (String | Int32)
typeof(klass.cast(number)) # => Int32
def |(other : U.class) forall U
#
Returns the union type of self and other.
Int32 | Char # => (Int32 | Char)