struct SimpleHash(K, V)
Defined in:
simple_hash.crClass Method Summary
Instance Method Summary
- #[](key)
- #[]=(key : K, value : V)
- #[]?(key)
- #delete(key)
- #dup
- #each(&block)
- #each_key(&block)
- #each_value(&block)
-
#each_with_object(memo, &block)
Iterates the given block for each element with an arbitrary object given, and returns the initially given object.
- #fetch(key, &block)
- #has_key?(key)
- #inspect(io : IO)
- #keys
- #object_id
-
#reject(&block : K, V -> _)
Returns a new hash consisting of entries for which the block returns false.
-
#reject!(&block : K, V -> _)
Equivalent to
Hash#reject
, but makes modification on the current object rather that returning a new one. -
#select(&block : K, V -> _)
Returns a new hash consisting of entries for which the block returns true.
-
#select!(&block : K, V -> _)
Equivalent to
Hash#select
but makes modification on the current object rather that returning a new one. - #size
- #to_s(io : IO)
- #values
Instance methods inherited from struct Struct
==(other : self) : Bool
==,
hash : Int32
hash,
inspect(io : IO) : Nil
inspect,
to_s(io)
to_s
Instance methods inherited from struct Value
==(other)
==,
dup
dup
Instance methods inherited from class Object
!=(other)
!=,
!~(other)
!~,
==(other)
==,
===(other)===(other : YAML::Any)
===(other : JSON::Any) ===, =~(other) =~, class class, crystal_type_id crystal_type_id, dup dup, hash hash, inspect(io : IO)
inspect inspect, itself itself, not_nil! not_nil!, tap(&block) tap, 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
to_yaml(io : IO) to_yaml, try(&block) try
Class methods inherited from class Object
==(other : Class)
==,
===(other)
===,
cast(other) : self
cast,
clone
clone,
dup
dup,
from_json(string_or_io) : selffrom_json(string_or_io, root : String) : self from_json, from_yaml(string : String) : self from_yaml, hash hash, inspect(io) inspect, name : String name, nilable? nilable?, to_s(io) to_s, |(other : U.class) forall U |
Class Method Detail
Instance Method Detail
Iterates the given block for each element with an arbitrary object given, and returns the initially given object.
evens = (1..10).each_with_object([] of Int32) { |i, a| a << i*2 }
# => [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
Returns a new hash consisting of entries for which the block returns false.
h = {"a" => 100, "b" => 200, "c" => 300}
h.reject { |k, v| k > "a" } # => {"a" => 100}
h.reject { |k, v| v < 200 } # => {"b" => 200, "c" => 300}
Equivalent to Hash#reject
, but makes modification on the current object rather that returning a new one. Returns nil if no changes were made.
Returns a new hash consisting of entries for which the block returns true.
h = {"a" => 100, "b" => 200, "c" => 300}
h.select { |k, v| k > "a" } # => {"b" => 200, "c" => 300}
h.select { |k, v| v < 200 } # => {"a" => 100}
Equivalent to Hash#select
but makes modification on the current object rather that returning a new one. Returns nil if no changes were made