Re: List<>.Exists()???
- From: "Marc Gravell" <marc.gravell@xxxxxxxxx>
- Date: Tue, 4 Dec 2007 07:43:58 -0000
What you are looking for is List<T>.Contains(...), i.e.
if(!numList.Contains(newNumber)) {...}
That should fix it; for completeness:
List<T>.Exists(...) checks whether any of the items in the list
satisfies a condition (specified as a predicate); for example, to test
whether any of the numbers are divisible by 3 (using the new C# 3
"lambda" syntax):
if (numList.Exists(i => i % 3 == 0)) {...}
The "predicate" is just a method that accepts the item to be tested
and returns true (match) or false:
static bool SomeMethod(int i) {
return i % 3 == 0;
}
....
if (numList.Exists(SomeMethod)) {...}
Does that make it any clearer?
Marc
.
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