Conditional Lambda Expression?

Question

I have a lambda expression that currently looks like this:

item => Reports.Add(item)

I want to modify it such that it is conditional, and basically checks that Reports.Contains(item) returns false, then performs the Reports.Add(item) action. Is this possible to do using lambda all on one line?

Chris

Ani · Accepted Answer · 2010-10-13 19:22:13Z

8

Action<ItemType> action = item => { if(!Reports.Contains(item)) Reports.Add(item);};

That should do, but it depends on how you define 'one line', really.

edited Oct 13, 2010 at 19:22

answered Oct 13, 2010 at 19:17

Ani

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Jimmy · Accepted Answer · 2010-10-13 19:21:06Z

5

alternative to Ani's suggestion: make Reports a HashSet.

answered Oct 13, 2010 at 19:21

Jimmy

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1 Comment

Jace Rhea Over a year ago

Agreed. It sounds like a different data structure may be needed.

Mike Cheel · Accepted Answer · 2010-10-13 19:27:11Z

0

you can separate multiple lines in your lambda with semicolons.

answered Oct 13, 2010 at 19:27

Mike Cheel

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