Use Contains for simple equality

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Metadata

ID: csharp-best-practices/contains-not-any

Language: C#

Severity: Warning

Category: Best Practices

Description

When using only a simple comparison, use Contains instead of Any as it is more efficient in terms of resources allocation.

Non-Compliant Code Examples

using System.Xml;

class MyClass {
    public static bool filter(IEnumerable<int> values, int target)
    {
        return values.Any(x => x > target);
        return values.Any(x => x == target);
    }
}

Compliant Code Examples

using System.Xml;

class MyClass {
    public static bool filter(IEnumerable<int> values, int target)
    {
        if (values.Any(c => c == Enum.Member)) {
            return values.Contains(target);
        }
    }
}
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