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Home/ Questions/Q 3229078
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Editorial Team
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Editorial Team
Asked: May 17, 20262026-05-17T16:46:07+00:00 2026-05-17T16:46:07+00:00

I have a lambda expression that currently looks like this: item => Reports.Add(item) I

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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

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  1. Editorial Team
    Editorial Team
    2026-05-17T16:46:08+00:00Added an answer on May 17, 2026 at 4:46 pm
    Action<ItemType> action = item => { if(!Reports.Contains(item)) Reports.Add(item);};
    

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

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