loop macro with monadic operation

[nyuichi]

https://gist.github.com/wasabiz/c15f947dc763cc479626#file-loop-scm

; loop macro with monadic operation

(loop
  (let ((a (pick '(1 2 3)))
        (b (pick '(4 5 6))))
    (+ a b)))

;=> (5 6 7 6 7 8 7 8 9)

[updates]

• https://gist.github.com/wasabiz/9eee824087c3ee21b02d
• https://gist.github.com/wasabiz/09f63271664337507d6c

[nyuichi]

As a name 'loop' is often used for let-loop expression, we may call it iter or something instead.

[stibear]

Why don't you use srfi-42?

[nyuichi]

@stibear

As srfi-42 is made to become an enough powerful DSL to perform everything that you can do with plain functions and expressions, it contains a lot of things in itself. It's too complicated.

[nyuichi]

Because of dependency on (picrin control) library, we first make a system that provides a way to specify what are requisite libraries for each library. The merge will be late.

[nyuichi]

Closing as fixed. This suggestion is now a part of picrin scheme, as (picrin control list) library.