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Unicode Processing in C++
...uilt in facilities for it. That isn't always a possibility with older code bases though, with the standard being so new at present.
EDIT: To clarify, C++11 is Unicode aware in that it now has support for Unicode literals and Unicode strings. However, the standard library has only limited support fo...
Using an RDBMS as event sourcing storage
...very modification of your model would result in having to migrate your database (just as in good old-fashioned state-based persistence). Therefore I wouldn't recommend option 1 and 2 at all.
Below is the schema as used in Ncqrs. As you can see, the table "Events" stores the related data as a CLOB (...
Why generate long serialVersionUID instead of a simple 1L?
...object.
If the ID is omitted, Java will actually calculate the ID for you based on fields of the object, but I believe it is an expensive process, so providing one manually will improve performance.
Here's are a couple of links to articles which discuss serialization and versioning of classes:
J...
How to get hosting Activity from a view?
...Activity)context;
}
context = ((ContextWrapper)context).getBaseContext();
}
return null;
}
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Converting many 'if else' statements to a cleaner approach [duplicate]
...provided in the question boils down to "execute one-and-only-one code path based on an input variable", which is (in my opinion) a pretty good definition of exactly what a switch is supposed to do.
– scubbo
Feb 3 '17 at 1:05
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possibly undefined macro: AC_MSG_ERROR
...lly quoted the AC_MSG_ERROR so it was being treated as a string:
AX_BOOST_BASE([1.42], [], [AC_MSG_ERROR([Could not find Boost])])
Once I removed the square brackets around the AC_MSG_ERROR macro, it worked:
AX_BOOST_BASE([1.42], [], AC_MSG_ERROR([Could not find Boost]))
Those comments saying ...
git difftool, open all diff files immediately, not in serial
...me question was asked on the git mail list.
I put together a shell script based on that email thread which performs a directory diff between arbitrary commits.
Starting with git v1.7.10, the git-diffall script is included in the contrib of the standard git installation.
For versions before v1.7.1...
error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘c...
error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘class Derived*’ (source type is not polymorphic)在将父类型转换为子类型时,可以使用static_cast和dynamic_cast.如果使用dynamic_cast,它要求父类必须为多态的,即要求至少有一个虚函数,因此....
Where is the C auto keyword used?
...rking enforcement.
If you see a lot of extern static auto ... in any code base, you're in a bad neighborhood; look for a better job immediately, before the whole place turns to Rust.
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SQL parser library for Java [closed]
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Statement is a base class. A SELECT statement will be of type Query. It contains a QueryBody that has the subclass QuerySpecification. The structure is more complex than you might expect in order to support UNION, TABLE, VALUES, set operati...