Module: Transproc::Conditional
- Extended by:
- Registry
- Defined in:
- lib/transproc/conditional.rb
Overview
Conditional transformation functions
Class Method Summary collapse
-
.guard(value, predicate, fn) ⇒ Mixed
Apply the transformation function to subject if the predicate returns true, or return un-modified.
-
.is(value, type, fn) ⇒ Object
Calls a function when type-check passes.
-
.not(value, fn) ⇒ Boolean
Negates the result of transformation.
Methods included from Registry
[], contain?, fetch, import, register, store
Class Method Details
.guard(value, predicate, fn) ⇒ Mixed
Apply the transformation function to subject if the predicate returns true, or return un-modified
48 49 50 |
# File 'lib/transproc/conditional.rb', line 48 def self.guard(value, predicate, fn) predicate[value] ? fn[value] : value end |
.is(value, type, fn) ⇒ Object
Calls a function when type-check passes
68 69 70 |
# File 'lib/transproc/conditional.rb', line 68 def self.is(value, type, fn) guard(value, -> v { v.is_a?(type) }, fn) end |
.not(value, fn) ⇒ Boolean
Negates the result of transformation
31 32 33 |
# File 'lib/transproc/conditional.rb', line 31 def self.not(value, fn) !fn[value] end |