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What is a “callable”?

...t's clear what a metaclass is , there is an associated concept that I use all the time without knowing what it really means. ...
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Why not infer template parameter from constructor?

... This is actually a great point which I never considered. I don't see any way around the fact that the pointer would have to be type specific (i.e. it would have to be MyClass<string>* pm). If that's the case, then all you would end...
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Repeat command automatically in Linux

...ive option makes highlighting "sticky", presenting a running display of all positions that have ever changed. The -t or --no-title option turns off the header showing the interval, command, and current time at the top of the display, as well as the following blank line. Linux/Unix ma...
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How to compile for Windows on Linux with gcc/g++?

... The base "mingw32" may or may not be capable, but it's easy enough to install/use the variants by name. ar2015: Does it not support C++11 at all or are you talking about a problem you had with it? I'm working on getting a project to build with mingw as we speak and this would be good information t...
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Best way to make Django's login_required the default

...p, the vast majority of which requires a login to access. This means that all throughout our app we've sprinkled: 9 Answer...
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Convert string to List in one line?

... @Dan: I agree, and generally I do use the params overload. But for an answer to a question sometimes I feel like verbosity is better. Just a matter of opinion really. – Matt Greer Feb 16 '11 at 1:17 ...
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When do Java generics require

...p of String to Class<Date> doesn't sound terribly useful in general (all it can hold is Date.class as values rather than instances of Date) As for genericizing assertThat, the idea is that the method can ensure that a Matcher that fits the result type is passed in. ...
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Difference between Role and GrantedAuthority in Spring Security

...thority as being a "permission" or a "right". Those "permissions" are (normally) expressed as strings (with the getAuthority() method). Those strings let you identify the permissions and let your voters decide if they grant access to something. You can grant different GrantedAuthoritys (permissions...
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Get size of all tables in database

... i.object_id = p.OBJECT_ID AND i.index_id = p.index_id INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id LEFT OUTER JOIN sys.schemas s ON t.schema_id = s.schema_id WHERE t.NAME NOT LIKE 'dt%' AND t.is_ms_shipped = 0 AND i.OBJECT_ID > 255 GROUP BY t...
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How to specialize std::hash::operator() for user-defined type in unordered containers?

... You are expressly allowed and encouraged to add specializations to namespace std*. The correct (and basically only) way to add a hash function is this: namespace std { template <> struct hash<Foo> { size_t operator()(const...