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How to specialize std::hash::operator() for user-defined type in unordered containers?
... h is an expression of type H or const H, and k is an expression of a type convertible to (possibly const) Key, then h(k) is a valid expression with type size_t.
If h is an expression of type H or const H, and u is an lvalue of type Key, then h(u) is a valid expression with type size_t which does no...
ProcessStartInfo hanging on “WaitForExit”? Why?
...in a similar situation. I was redirecting StandardError for no reason when converting with ffmpeg in a process, it was writting enough in the StandardError stream to create a deadlock.
– Léon Pelletier
Oct 1 '12 at 7:29
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Empty arrays seem to equal true and false at the same time
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@Devy all objects in JavaScript are truthy, so the convert any objects to Boolean is true. See 2ality.com/2013/08/objects-truthy.html
– Thomson
Oct 17 '16 at 21:27
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How do I invert BooleanToVisibilityConverter?
I'm using a BooleanToVisibilityConverter in WPF to bind the Visibility property of a control to a Boolean . This works fine, but I'd like one of the controls to hide if the boolean is true , and show if it's false .
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How slow are .NET exceptions?
...hey're not logical. For instance, int.TryParse is entirely appropriate for converting data from a user. It's appropriate when reading a machine-generated file, where failure means "The file isn't in the format it's meant to be, I really don't want to try to handle this as I don't know what else migh...
Java: when to use static methods
... definitely be static.
So in a class Car you might have a method:
double convertMpgToKpl(double mpg)
...which would be static, because one might want to know what 35mpg converts to, even if nobody has ever built a Car. But this method (which sets the efficiency of one particular Car):
void set...
Any reason why scala does not explicitly support dependent types?
...plicated that it is hard to see the laws, the value
level expressions are converted (automatically but still) to type level things and
you need to trust that conversion as well.
There is room for error in all of this which kinda defies the purpose of compiler acting as
a proof assistant.
(EDITE...
JavaScriptSerializer - JSON serialization of enum as string
...enum as a string in my json without having to create a custom JavaScriptConverter ? Perhaps there's an attribute that I could decorate the enum definition, or object property, with?
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C compiler for Windows? [closed]
... so much of an issue. Also, I've never used them but there are file format converter tools.
– BCS
Apr 23 '09 at 17:52
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INSERT with SELECT
...RACTER SET utf8) COLLATE utf8_bin;
This conversion (CAST() is synonym of CONVERT() ) is very useful if your tables have different character sets on the same table column (which can potentially lead to data loss if not handled properly).
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