module Gorillib::Hashlike::Keys
Public Instance Methods
assert_valid_keys(*valid_keys)
click to toggle source
Validate all keys in a hash match *valid keys, raising ArgumentError
on a mismatch. Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols as keys, this will fail.
Examples¶ ↑
{ :name => "Rob", :years => "28" }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key(s): years" { :name => "Rob", :age => "28" }.assert_valid_keys("name", "age") # => raises "ArgumentError: Unknown key(s): name, age" { :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing
# File lib/gorillib/hashlike/keys.rb, line 40 def assert_valid_keys(*valid_keys) unknown_keys = keys - [valid_keys].flatten raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty? end
stringify_keys()
click to toggle source
Return a new hash with all keys converted to strings.
# File lib/gorillib/hashlike/keys.rb, line 5 def stringify_keys dup.stringify_keys! end
stringify_keys!()
click to toggle source
Destructively convert all keys to strings.
# File lib/gorillib/hashlike/keys.rb, line 10 def stringify_keys! keys.each do |key| self[key.to_s] = delete(key) end self end
symbolize_keys()
click to toggle source
Return a new hash with all keys converted to symbols, as long as they respond to to_sym
.
# File lib/gorillib/hashlike/keys.rb, line 19 def symbolize_keys dup.symbolize_keys! end
symbolize_keys!()
click to toggle source
Destructively convert all keys to symbols, as long as they respond to to_sym
.
# File lib/gorillib/hashlike/keys.rb, line 25 def symbolize_keys! keys.each do |key| self[(key.to_sym rescue key) || key] = delete(key) end self end