Module: DR::CoreExt::Proc
- Defined in:
- lib/dr/ruby_ext/core_modules.rb
Instance Method Summary collapse
-
#call_block(*args, **opts) ⇒ Object
Safely call our block, even if the user passed in something of a different arity (lambda case).
-
#compose(g) ⇒ Object
return self o g f.compose(g).(5,6).
-
#rcurry(*args, &b) ⇒ Object
similar to curry, but pass the provided arguments on the right (a difference to Proc#curry is that we pass the argument directly, not via .call).
-
#uncurry ⇒ Object
(->(x) {x+y}).uncurry.(2,3) #=> 5 (->(x,y) x+y).curry.uncurry.(2,3) #=>5.
Instance Method Details
#call_block(*args, **opts) ⇒ Object
Safely call our block, even if the user passed in something of a different arity (lambda case)
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# File 'lib/dr/ruby_ext/core_modules.rb', line 241 def call_block(*args,**opts) if arity >= 0 case arity when 0 call(**opts) else call(args[0...arity],**opts) end else call(*args,**opts) end end |
#compose(g) ⇒ Object
return self o g f.compose(g).(5,6)
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# File 'lib/dr/ruby_ext/core_modules.rb', line 265 def compose(g) lambda do |*a,&b| self.call(*g.call(*a,&b)) end end |
#rcurry(*args, &b) ⇒ Object
similar to curry, but pass the provided arguments on the right (a difference to Proc#curry is that we pass the argument directly, not via .call)
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# File 'lib/dr/ruby_ext/core_modules.rb', line 257 def rcurry(*args,&b) return ::Proc.new do |*a,&b| self.call(*a,*args,&b) end end |
#uncurry ⇒ Object
(->(x) {x+y}).uncurry.(2,3) #=> 5 (->(x,y) x+y).curry.uncurry.(2,3) #=>5
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# File 'lib/dr/ruby_ext/core_modules.rb', line 273 def uncurry lambda do |*a| a.reduce(self) {|fun,v| fun.call(v)} end end |