Sha256: a4774ade8b0e20f5de822ce49e40b66eda429741c73b21ff421ed3421f19740f
Contents?: true
Size: 962 Bytes
Versions: 17
Compression:
Stored size: 962 Bytes
Contents
class Hash
# Returns true or false whether the hash
# contains the given keys.
#
# h = { :a => 1, :b => 2 }
# h.has_keys?( :a ) #=> true
# h.has_keys?( :c ) #=> false
#
# CREDIT: Trans
def has_keys?(*check_keys)
unknown_keys = check_keys - self.keys
return unknown_keys.empty?
end
alias_method :keys?, :has_keys?
# Returns true if the hash contains
# _only_ the given keys, otherwise false.
#
# h = { :a => 1, :b => 2 }
# h.has_only_keys?( :a, :b ) #=> true
# h.has_only_keys?( :a ) #=> false
#
# CREDIT: Trans
def has_only_keys?(*check_keys)
unknown_keys = self.keys - check_keys
return unknown_keys.empty?
end
alias_method :only_keys?, :has_only_keys?
# Each with key is like each_pair but reverses the order
# the parameters to [value,key] instead of [key,value].
#
# CREDIT: Trans
def each_with_key( &yld )
each_pair{ |k,v| yld.call(v,k) }
end
end
Version data entries
17 entries across 16 versions & 1 rubygems