Lambda syntax: elements where a function has a certain value over a range of arguments

I have a custom type MyType with a function MyBoolFunction(string) that returns true or false.

I have a large list of MyType objects MyTypeList.

I have a list of string objects StringList.

I would like to get the subset of MyTypeList where myTypeList.MyBoolFunction(arg) is true for at least one value of arg as arg ranges over StringList.

I think I should be able to do this with C# lambda expressions.

I imagine some开发者_运维问答thing like this (pseudocode)

MyTypeList.Where(x => (x.MyBoolFunction(arg)==true for some arg in StringList);

Is this possible? How can I do this?

Try using Enumerable.Any:

var query = MyTypeList.Where(x => StringList.Any(arg => x.MyBoolFunction(arg)));

MyTypeList.Where(x => StringList.Any(s => x.MyBoolFunction(s)));

For some clarity, s is an entry in the StringList and x is an entry in MyTypeList

Without knowing your actual types i would say:

MyTypeList.Where(x => StringList.Any(arg => x.MyBoolFunction(arg));