CODEWITHSUNDEEP
linq
dagda1
dagda1

Reputation: 28780

Turn 2 linq expressions into

Is there anyway to change the following 2 linq expressions into 1?

var criticalCategories =
    _commonDao.GetAllByExpression<CategoryItem>(
        x => x.Category.Uid == gridAnswer.ActivityCategory.Uid && x.Critical);

if(criticalCategories.Any())
{
    criticalWeight = criticalCategories.Min(x => x.Weight);
}

Upvotes: 0

Views: 42

Answers (1)

Jon
Jon

Reputation: 437356

You can use Enumerable.DefaultIfEmpty to make sure that Min will produce a specific value if your source sequence contains no elements.

You could then write:

var criticalCategories = _commonDao.GetAllByExpression<CategoryItem>(...);

criticalWeight = criticalCategories
                     .Select(x => x.Weight)
                     .DefaultIfEmpty(42)
                     .Min();

The above is trivially chainable, but I did not actually chain it here because I 'm not quite sure how criticalCategories is supposed to be used later on (if at all). Could you please clarify?

Upvotes: 2

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