| To null or not to null? |
by Khaar |
2009-01-29 02:19:43 |
What method would you use to determine whether a numeric value (any numeric type) has been specified or not? Keep in mind that *any* value is valid.
a) nullable type - most straightforward in understanding, not so much in use
b) separate boolean - simple usage, but one logical value is stored in two variables, which must then always be used, validated and sent around in a pair
c) reserved value as undefined (e.g. MaxValue or something like that) - fairly simple usage, but a chance of logic failure
d) something else
My particular problem is in C#, and I know how I'll solve it, but I'm asking for general opinions. |
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[ Reply ] |
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I'd think about buildign an object around it.. | by Enzomatrix | 2009-01-29 02:27:27 |
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Sounds good to me... | by mekkanik_mike | 2009-01-29 03:20:08 |
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For example, but you forgot the constructor.. | by Enzomatrix | 2009-01-29 04:27:32 |
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That's C#'s Nullable<T> class, right there. (n/t) | by bwkaz | 2009-01-29 08:58:58 |
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null. | by aix tom | 2009-01-29 02:45:34 |
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Comparison is easy, but use isn't. | by Khaar | 2009-01-29 03:31:03 |
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Even the generic (aka template) type? | by bwkaz | 2009-01-29 09:02:06 |
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How would that compare ? | by SciSSorS | 2009-01-29 04:28:00 |
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Yes, I think so.. | by Enzomatrix | 2009-01-29 04:30:31 |
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Oh, kind of overloaded op for exceptional NULL | by SciSSorS | 2009-01-29 04:48:09 |
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null indeed | by langerjan | 2009-01-29 07:54:51 |
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Maybe a | by Mad Marty | 2009-01-29 02:48:49 |
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Here's how I'd do it: | by JimK | 2009-01-29 02:48:57 |
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you cant have a variable/object typed void. | by mekkanik_mike | 2009-01-29 03:21:05 |
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But this isn't C/++, so I can :-) (n/t) | by JimK | 2009-01-29 04:18:15 |
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Actually, IIRC, in C# it's possible... | by Enzomatrix | 2009-01-29 04:29:09 |
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ugh. | by mekkanik_mike | 2009-01-29 20:27:41 |
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How about a pointer that's NULL when it's not set? | by Apo | 2009-01-29 03:38:06 |
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<Deleted> | <Deleted> | 2009-01-29 08:58:15 |
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Moderated: Double Post (n/t) | by Nea | 2009-01-29 08:58:27 |
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You can just hit preview and it automatically adds (n/t) | by Spisefisken | 2009-01-29 03:49:38 |
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You can just hit refresh | by Spisefisken | 2009-01-29 03:51:30 |
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I hated pointers when I was still in school. | by Khaar | 2009-01-29 04:35:41 |
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NULL should get the job done | by Bedda | 2009-01-29 04:10:51 |
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If your doing it in .NET 2.0+ then use a nullable | by sazzer | 2009-01-29 04:54:06 |
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By the time is is used, it must be initialized | by huitzilopochtli | 2009-01-29 05:11:34 |
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I'd use Python and tak None as the non-value (n/t) | by moddermonster | 2009-01-29 09:21:45 |
