if-let and Friends

A set of macros to allow more than one binding for if-let, when-let, if-some and when-some.

These macros are convientenly named if-let*, when-let*, if-some* and when-some*. The true branch of these macros are evaluated when all bindings pass the if/some condition.

Usage

Install in project.clj

Usage is similar to their clojure.core counterpart.

Require: [if-let.core :refer :all] in your namespace.

(ns user
    (:require [if-let.core :refer :all]))

(if-let* [a 1
          b 2]
    (+ a b)
    "false branch")
;; => 3

(if-let* [a 1
          b nil]
    (+ a b)
    "false branch")
;; => "false branch"


(when-let* [a 1
            b 2]
    (+ a b))
;; => 3

(when-let* [a nil
            b 2]
    (+ a b))
;; => nil


(if-some* [a 1
           b 2]
    (+ a b)
    "false branch")
;; => 3

(if-some* [a 1
           b nil]
    (+ a b)
    "false branch")
;; => "false branch"


(when-some* [a 1
             b 2]
    (+ a b))
;; => 3

(when-some* [a nil
             b 2]
    (+ a b))
;; => nil

License

Copyright © 2016 LockedOn

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.