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318 views, 1 edit(s), 4888 characters(s) Page last modified 18:14, 15 Jan 2013 by contentconnector

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some?()

Synopsis

Returns a value of True if the named function fun returns a value of True for any argument supplied in the input list.

some? ( fun As Name, _
        list As List ) As Boolean

Argument	Type	Description
fun	Name	The name of the function to apply. The function must accept a single "Any" parameter, and return a Boolean.
list	list	List of arguments, to which the function will be applied.

Intent >some?(:empty?, {{1}, {:a}, {}, {:b}}) 
--> True

In this example, the third element of the input list is empty, and therefore the empty? function returns True for it.

Intent >some?(:empty?, {{}, {:a}, {}, {:b}}) 
--> True

In this example, more than one of the list items matches the empty? predicate.

Intent >some?(:empty?, {{1}, {:a}, {2}, {:b}}) 
--> False

Here, none of the list items matches the empty? predicate.

Intent >some?(:even?, {1, 2, 3, 4, 5}) 
--> True

Here, 2 of the 4 list items causes a True return for the even? function.

Intent >some?(:even?, {1, 3, 5, 7, 9}) 
--> False

Here, none of the list items is even, so no matches are found.