大约有 16,000 项符合查询结果（耗时：0.0293秒） [XML]
Is there any use for unique_ptr with array?
...ap and move operations, where n is the number of elements in the array
Pointer/reference/iterator invalidation
array ensures pointers, references and iterators will never be invalidated while the object is live, even on swap()
unique_ptr<T[]> has no iterators; pointers and references are o...
T-SQL - function with default parameters
...ameter. This way ALL existing code works, and you only have one place to maintain.
– Eske Rahn
Oct 18 '18 at 16:16
add a comment
|
...
Should you ever use protected member variables?
... how picky you are about hiding state.
If you don't want any leaking of internal state, then declaring all your member variables private is the way to go.
If you don't really care that subclasses can access internal state, then protected is good enough.
If a developer comes along and subclasse...
Is there any difference between DECIMAL and NUMERIC in SQL Server?
...
NOTE, however, that SQL Server does not treat them as interchangeable: if, for example, you have a "parent" column in "DECIMAL(18,0)” format, and you try to add a foreign key for it that references a column in "NUMERIC(18,0)" format, you will get the error Column '<referen...
Why does += behave unexpectedly on lists?
...s the object's value, whereas for immutable types like tuples, strings and integers a new object is returned instead (a += b becomes equivalent to a = a + b).
For types that support both __iadd__ and __add__ you therefore have to be careful which one you use. a += b will call __iadd__ and mutate a,...
How can I open Windows Explorer to a certain directory from within a WPF app?
...l class Window1 : Window
{
public Window1()
{
ShellExecute(IntPtr.Zero, "open", "explorer.exe", "", "", ShowCommands.SW_NORMAL);
InitializeComponent();
}
public enum ShowCommands : int
{
SW_HIDE = 0,
SW_SHOWNORMAL = 1,
SW_NORMAL = 1,
...
Populating spinner directly in the layout xml
... public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
if (a.getSelectedItem().toString().trim().equals("Kilogram")) {
if (!b.getText().toString().isEmpty()) {
float value1 = Float.parseFloat(b.getTex...
When use getOne and findOne methods Spring Data JPA
...a-Jpa modified findOne().
Previously, it was defined in the CrudRepository interface as :
T findOne(ID primaryKey);
Now, the single findOne() method that you will find in CrudRepository is which one defined in the QueryByExampleExecutor interface as :
<S extends T> Optional<S> findOn...
Difference between “managed” and “unmanaged”
...rs is 'unmanaged code'. Also, since it compiles to machine code and not an intermediate language it is non-portable.
No free memory management or anything else the CLR provides.
Since you cannot create unmanaged code with Visual Basic or C#, in Visual Studio all unmanaged code is written in C/C++....
Normalization in DOM parsing with java - how does it work?
...
@user2043553, the newlines are actually the point there. Without newlines, you wouldn't see the difference. If you shouldn't have understood: Normalization "corrects" the XML so one tag is interpreted as one element. If you didn't do that, it might happen that these very...