i created a delegate for a class @protocol gameDelegate <NSObject> @optional -(void)gameStarted; @required
i have the following code: let rec sums1 n = function (a,b,x:int array,s,k) when (s<n&&b=x.Length-1) -> []//None
Sorry if it\'s a novice question - I want to parse something defined by Exp ::= Mandatory_Part Optional_Part0 Optional_Part1
I\'m trying to utilize the Maybe type in Haskell.I have a lookup for key, value tuples that returns a Maybe.How d开发者_Python百科o I access the data that was wrapped by Maybe?For example I want to ad
I have a function that has a return type of Maybe ([(Int,Int)],(Int,Int)) I would like to call this from another function and perform an operation on the data.
I\'ve found such code in the book \"Real World Haskell\", p68 data Tree a = Node a (Tree a) (Tree a) Empty
I have an XML file where some sub tags (child 开发者_开发技巧node elements) are optional. e.g. <part>
we are trying to build the Haskell-MaybeMonad sample from http://www.haskell.org/all_about_monads/html/maybemonad.html in F#.
What is the most efficient way of reading optional attributes in an optional setting argument. I\'m using something like:
For a while I have been struggling to integrate scala with java methods that might return null.I came up with the following utility w开发者_开发问答hich helps a lot:
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