Sha256: 75efd73a56dc91ce0b65b0cbde318b12428aa91d423e5e1e88a6c4688a230600
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Contents
=begin rdoc
Hash extentions
=end
class Hash
def choose(&block)
Hash[*self.select(&block).inject([]){|res,(k,v)| res << k << v}]
end
def to_instance_variables(inst=nil)
each do |k,v|
inst.instance_variable_set "@#{k}", v
inst.class.send :attr_reader, k if inst
end
end
# extracted from activesupport
# Returns an array of the values at the specified indices:
#
# hash = HashWithIndifferentAccess.new
# hash[:a] = "x"
# hash[:b] = "y"
# hash.values_at("a", "b") # => ["x", "y"]
def values_at(*indices)
indices.collect {|key| self[key]}
end
#TODO: deprecate
# def extract!(&block)
# o = Hash[*select(&block).flatten]
# o.keys.each {|k| self.delete(k) }
# o
# end
def append(other_hash)
returning Hash.new do |h|
h.merge!(self)
other_hash.each do |k,v|
h[k] = has_key?(k) ? [self[k], v].flatten.uniq : v
end
end
end
def append!(other_hash)
other_hash.each do |k,v|
self[k] = has_key?(k) ? [self[k], v].flatten.uniq : v
end
self
end
def safe_merge(other_hash)
merge(other_hash.delete_if {|k,v| has_key?(k) })
end
def safe_merge!(other_hash)
merge!(other_hash.delete_if {|k,v| has_key?(k) && !v.nil? })
end
def to_os
m={}
each {|k,v| m[k] = v.to_os }
MyOpenStruct.new(m)
end
def method_missing(sym, *args, &block)
if has_key?(sym)
fetch(sym)
elsif has_key?(sym.to_s)
fetch(sym.to_s)
else
super
end
end
def next_sorted_key(from)
idx = (size - keys.sort.index(from))
keys.sort[idx - 1]
end
end
Version data entries
6 entries across 6 versions & 2 rubygems