From: jim <jim@web>
Date: Sat, 21 Mar 2015 19:30:10 +0000 (-0400)
Subject: removed
X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=b18e37c538c98f47159a96486860a808e2a068dc;ds=inline

removed
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diff --git a/exercises/_assignment7.mdwn b/exercises/_assignment7.mdwn
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-## Baby monads
-
-(Depends on lecture notes for safe division by zero.)
-
-Write a function `lift'` that generalized the correspondence between +
-and `add'`: that is, `lift'` takes any two-place operation on integers
-and returns a version that takes arguments of type `int option`
-instead, returning a result of `int option`.  In other words, `lift'`
-will have type:
-
-	(int -> int -> int) -> (int option) -> (int option) -> (int option)
-
-so that `lift' (+) (Some 3) (Some 4)` will evalute to `Some 7`.
-Don't worry about why you need to put `+` inside of parentheses.
-You should make use of `bind'` in your definition of `lift'`:
-
-	let bind' (u: int option) (f: int -> (int option)) =
-		match u with None -> None | Some x -> f x;;