int? version available for String.IsNullOrWhiteSpace

Question

Our application requires int? variables. I'm often checking both to make sure not null and not 0 and it does get lengthy.

Is there an out of the box version of String.IsNullOrWhiteSpace() or String.IsNullOrEmpty() for int?

Maybe this would require an extension method?

If there even was or when someone makes one, would something like this considered bad practice?

you can make an extension for it but I would just name it nicely, HasNonDefaultValue — johnny 5, Feb 28 '17 at 20:09
and this isn't considered terrible practice laced with an unholy deathwish? I feel like anytime I suggest some extension I get reamed on here. — markokstate, Feb 28 '17 at 20:37

Dave Cousineau · Answer 1 · 2017-02-28T20:32:20.617

1

I don't think so but it's easy to write your own:

[Pure]
public static bool IsNullOrDefault<T>(this T? pValue)
where T : struct {
   return pValue == null || pValue.Value.Equals(default(T));

   // or as suggested in comments (tested)
   return pValue == null || EqualityComparer<T?>.Default.Equals(pValue, default(T));
}

edited Feb 28 '17 at 20:32

answered Feb 28 '17 at 20:12

Dave Cousineau

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As a side note, consider using `EqualityComparer.Default.Equals` to avoid the boxing incurred by calling `Object.Equals`. – Zdeněk Jelínek Feb 28 '17 at 20:20

int? version available for String.IsNullOrWhiteSpace

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