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Delete column from pandas DataFrame

... This answer isn't really correct - the pandas developers didn't, but that doesn't mean it is hard to do. – wizzwizz4 Sep 30 '17 at 9:42  |  s...
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?

... static_cast is the first cast you should attempt to use. It does things like implicit conversions between types (such as int to float, or pointer to void*), and it can also call explicit conversion functions (or implicit ones). In many cases, explicitly stating static_cast isn't neces...
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What is a classpath and how do I set it?

...my classpath - I guess it is so because I didn't add it to the cp, but why does such an error occur only sometimes instead of always? I ask this because, to be honest, I didn't ever include anything manually with the -cp command and would not know what to do with an error like that ...
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Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception

...l state of my program". But when you abuse "using" like this, suddenly it does. The second thing I would ask if I saw your original code is "what happens if an exception is thrown after the Unlock but before the try is entered?" If you're running a non-optimized assembly, the compiler might have i...
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Why and How to avoid Event Handler memory leaks?

...t it's going to be eligible for garbage collection soon, at which point it doesn't matter what subscribers there are. – Jon Skeet Apr 23 '15 at 5:46 1 ...
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Difference between clustered and nonclustered index [duplicate]

...ry key on a SQL Server table is also used as the clustering key - but that doesn't need to be that way! One rule of thumb I would apply is this: any "regular" table (one that you use to store data in, that is a lookup table etc.) should have a clustering key. There's really no point not to have a ...
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Is there a “standard” format for command line/shell help text?

... Typically, your help output should include: Description of what the app does Usage syntax, which: Uses [options] to indicate where the options go arg_name for a required, singular arg [arg_name] for an optional, singular arg arg_name... for a required arg of which there can be many (this is rar...
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Pointer vs. Reference

... What does it mean that references have value syntax but pointer semantic meaning? – Eric Andrew Lewis Aug 16 '15 at 13:43 ...
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Constant Amortized Time

...me is taken in total when you repeat the operation a million times. So it doesn't matter if the operation is very slow once in a while, as long as "once in a while" is rare enough for the slowness to be diluted away. Essentially amortised time means "average time taken per operation, if you do many...
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Natural Sort Order in C#

...have the same behaviour as the version of Windows it runs on, however this does mean that it differs between versions of Windows so you need to consider whether this is a problem for you. So a complete implementation would be something like: [SuppressUnmanagedCodeSecurity] internal static class Sa...