大约有 40,000 项符合查询结果(耗时:0.0357秒) [XML]
Is there a naming convention for MySQL?
... @rsb2097 Re: point 5 - After adding one column (to the end) the order could become invalid. You shouldn't add any constraint that requires re-ordering the columns as that's an unnecessary overhead.
– Will Sheppard
Aug 21 '18 at 10:26
...
ResourceDictionary in a separate assembly
...
This answer makes no sense. In order to follow it one already needs to know how to do it!
– user1040323
Oct 16 '18 at 15:20
...
How to quietly remove a directory with content in PowerShell
...nd line? Get-ChildItem -recurse doesn't return the children in a bottom-up order. Does Remove-Item order its pipelined input?
– aggieNick02
May 3 '18 at 20:15
add a comment
...
Why do we need a pure virtual destructor in C++?
...ly method that even if it is pure virtual has to have an implementation in order to instantiate derived classes (yes pure virtual functions can have implementations).
struct foo {
virtual void bar() = 0;
};
void foo::bar() { /* default implementation */ }
class foof : public foo {
void ba...
Automapper - how to map to constructor parameters instead of property setters
...
Tried something similar Mapper.CreateMap<Order, OrderViewModel>().ConstructUsing(x => new OrderViewModel(this)); ... Get a "The call is ambiguos" compiler error
– Chris Klepeis
Mar 29 '12 at 17:49
...
git remove merge commit from history
...did a soft reset and I've been able to have something quite like I wanted (order do not match initial expectations).
– Benjamin Toueg
Jul 10 '13 at 18:35
2
...
How to know if user is logged in with passport.js?
... } else {
res.redirect('/login');
}
}
And use it:
app.get('/orders', loggedIn, function(req, res, next) {
// req.user - will exist
// load user orders and render them
});
share
|
...
Regular expression for floating point numbers
... and '-.' are invalid
'.1e3' is valid, but '.e3' and 'e3' are invalid
In order to support both '1.' and '.1' we need an OR operator ('|') in order to make sure we exclude '.' from matching.
[+-]? +/- sing is optional since ? means 0 or 1 matches
( since we have 2 sub expressions we need to put t...
Explaining Python's '__enter__' and '__exit__'
...
In addition to the above answers to exemplify invocation order, a simple run example
class myclass:
def __init__(self):
print("__init__")
def __enter__(self):
print("__enter__")
def __exit__(self, type, value, traceback):
print("__exit__")
...
Difference between a “coroutine” and a “thread”?
... Parallelism is the simultaneous execution of multiple
pieces of work in order to increase speed. —https://github.com/servo/servo/wiki/Design
Short answer: With threads, the operating system switches running threads preemptively according to its scheduler, which is an algorithm in the operatin...
