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Why is it slower to iterate over a small string than a small list?
...IIObject *)(op))->state.kind) is (I think) an indirection and a C-level cast);
#define PyUnicode_DATA(op) \
(assert(PyUnicode_Check(op)), \
PyUnicode_IS_COMPACT(op) ? _PyUnicode_COMPACT_DATA(op) : \
_PyUnicode_NONCOMPACT_DATA(op))
(which is also boring for similar reasons, assu...
How do I modify fields inside the new PostgreSQL JSON datatype?
...nb manipulation functionality within PostgreSQL itself (but none for json; casts are required to manipulate json values).
Merging 2 (or more) JSON objects (or concatenating arrays):
SELECT jsonb '{"a":1}' || jsonb '{"b":2}', -- will yield jsonb '{"a":1,"b":2}'
jsonb '["a",1]' || jsonb '["b",2...
How to pass an array into a SQL Server stored procedure
...EmployeesTable
-- inner join AnotherTable on ...
where @List like '%;'+cast(employeeID as varchar(20))+';%'
END
GO
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What are some uses of template template parameters?
...ALUE> class interface {
void do_something(VALUE v) {
static_cast<DERIVED*>(this)->do_something(v);
}
};
template <typename VALUE> class derived : public interface<derived, VALUE> {
void do_something(VALUE v) { ... }
};
typedef interface<derived<int...
Receive result from DialogFragment
...t will not working after save and restore dialog fragment state. LocalBroadcastManager is best solution in this case.
– Nik
Aug 10 '16 at 12:50
4
...
Exporting functions from a DLL with dllexport
... ::LoadLibrary(T"opengl_plugin.dll");
m_pfnGetEngineVersion = reinterpret_cast<fnGetEngineVersion *>(
::GetProcAddress(m_hDLL, "getEngineVersion")
);
m_pfnRegisterPlugin = reinterpret_cast<fnRegisterPlugin *>(
::GetProcAddress(m_hDLL, "registerPlugin")
);
...
Foreign Key to multiple tables
...
ID int primary key,
Name varchar(50) NOT NULL,
PartyTypeId as cast(2 as tinyint) persisted,
foreign key (ID, PartyTypeId) references Party(PartyId, PartyTypeID)
)
CREATE TABLE dbo.[User]
(
ID int primary key,
Name varchar(50) NOT NULL,
PartyTypeId as cast(1 as tinyint...
Calling Objective-C method from C++ member function?
...ompile everything as Objective-C++ do you get warnings about using C-style casts and/or other C++-specific warnings about valid C-style code?
– dreamlax
Jun 30 '09 at 3:47
...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
...
@curiousguy: If a framework provides that casting an object reference to a base-type reference will be identity preserving, then every object instance must have exactly one implementation of any base-class method. If ToyotaCar and HybridCar both derived from Car and...
Why is String.chars() a stream of ints in Java 8?
... know that the IntStream contains char values represented as ints and that casting must be done at the proper place. This is doubly confusing because there are overloaded API calls like PrintStream.print(char) and PrintStream.print(int) that differ markedly in their behavior. An additional point of ...