大约有 531 项符合查询结果（耗时：0.0166秒） [XML]
Chaining multiple filter() in Django, is this a bug?
...ng like this: 'SELECT blog JOIN entry WHERE entry.head_list LIKE "Lennon" UNION SELECT blog JOIN entry WHERE entry.head_list LIKE "Lennon"'
– Johnny Tsang
Jan 27 '14 at 1:57
...
How is “=default” different from “{}” for default constructor and destructor?
...le default
constructor);
— if T is a (possibly cv-qualified) non-union class type
without a user-provided constructor, then the object is
zero-initialized and, if T’s implicitly-declared default constructor
is non-trivial, that constructor is called.
— if T is an array type,...
What is a Portable Class Library?
...ism supersedes much of PCL
UPDATE Jul 10 2013: Excellent state of the PCL union summary blogpost from @shanselman with lots of concrete examples, screenshots and links. Puts any other answer here in the shade.
UPDATE May 20 2013:
Very practical coverage of practical application and implications...
Meaning of acronym SSO in the context of std::string
...
public:
// all 83 member functions
private:
size_type m_size;
union {
class {
// This is probably better designed as an array-like class
std::unique_ptr<char[]> m_data;
size_type m_capacity;
} m_large;
std::array<char,...
What does Docker add to lxc-tools (the userspace LXC tools)?
...extremely fast, memory-cheap and disk-cheap.
This is provided by AUFS, a union filesystem that Docker depends on. You could set up AUFS yourself manually with LXC, but Docker uses it as a standard.
5) Logging: the standard streams (stdout/stderr/stdin) of each process container is collected an...
MongoDB with redis
...).
Redis provides a convenient set datatype and its associated operations (union, intersection, difference on multiple sets, etc ...). It is quite easy to implement a basic faceted search or tagging engine on top of this feature, which is an interesting addition to MongoDB more traditional indexing ...
How to set a Default Route (To an Area) in MVC
... }
return new ViewEngineResult(
searchedViewPaths.Union<string>(searchedMasterPaths));
}
protected virtual ViewEngineResult FindAreaPartialView(
ControllerContext controllerContext, string areaName,
string viewName, bool useCache)
{
...
How can I view the source code for a function?
...tialPolygons
Functions that call unexported functions
In the case of ts.union, .cbindts and .makeNamesTs are unexported functions from the stats namespace. You can view the source code of unexported functions by using the ::: operator or getAnywhere.
> stats:::.makeNamesTs
function (...)
{
...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...ked.
The small print:
In C++, types declared as class, struct, or union are considered "of class type". So the above refers to all three of them.
References are, semantically, aliases to objects, so I should have added "or reference to a pointer" to the #3 as well. However, I thought this...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...ve, as in when SQL Server does internal sorts such as during a distinct or union operation, or if it chooses a merge during it's query plan, etc. Move could also mean the time it takes to get the data from the server to my local pc or to another computer or wherever it is going to be consumed.
But...