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[haskell.html.markdown] Changed explanation for Haskell '$' operator

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Cornel Punga 2015-03-25 18:08:32 +02:00
parent 9fb21f1ce4
commit 2f43da109f
1 changed files with 6 additions and 4 deletions
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@ -202,10 +202,12 @@ foo = (*5) . (+10)
foo 5 -- 75 foo 5 -- 75
-- fixing precedence -- fixing precedence
-- Haskell has another function called `$`. Anything appearing after it will -- Haskell has another operator called `$`. This operator applies a function
-- take precedence over anything that comes before. -- to a given parameter. In contrast to standard function application, which
-- You can use `$` (often in combination with `.`) -- has highest possible priority of 10 and is left-associative, the `$` operator
-- to get rid of a lot of parentheses: -- has priority of 0 and is right-associative. Such a low priority means that
-- all other operators on both sides of `$` will be evaluated before applying
-- the `$`.
-- before -- before
(even (fib 7)) -- false (even (fib 7)) -- false