大约有 40,000 项符合查询结果（耗时：0.0379秒） [XML]
How do I break out of a loop in Scala?
...s a conditional that you test.
var sum = 0
(0 to 1000).iterator.takeWhile(_ => sum < 1000).foreach(i => sum+=i)
(warning--this depends on details of how the takeWhile test and the foreach are interleaved during evaluation, and probably shouldn't be used in practice!).
(1b) Use tail recu...
ASP.NET MVC 4 Custom Authorize Attribute with Permission Codes (without roles)
...e : AuthorizeAttribute, IAuthorizationFilter
{
private readonly string _claim;
public ClaimAuthorizeAttribute(string Claim)
{
_claim = Claim;
}
public void OnAuthorization(AuthorizationFilterContext context)
{
var user = context.HttpContext.User;
if(...
LINQ to SQL Left Outer Join
...
Public Sub LinqToSqlJoin07()
Dim q = From e In db.Employees _
Group Join o In db.Orders On e Equals o.Employee Into ords = Group _
From o In ords.DefaultIfEmpty _
Select New With {e.FirstName, e.LastName, .Order = o}
ObjectDumper.Write(q) End Sub
Check http:...
Uncaught SyntaxError: Unexpected token :
...
To add to @andy_magoon, in my case, I had a script tag that was supposed to serve up javascript, but because the request was redirected to an HTML page (its not important why it was redirected), which begins with <!DOCTYPE html>, whic...
How does free know how much to free?
...
FYI, for example BSD has malloc_size() to reliably access the block size from an malloc()ed pointer. But there's no reliable, portable way.
– laalto
Oct 5 '09 at 7:53
...
How do I animate constraint changes?
...
[UIView animateWithDuration:5
animations:^{
self._addBannerDistanceFromBottomConstraint.constant = -32;
[self.view layoutIfNeeded]; // Called on parent view
}];
bannerIsVisible = FALSE;
}
- (void)moveBannerOnScreen {
[self.view layoutIfNeeded];...
How to enter a multi-line command
...l allow line continuation directly:
$x=1..5
$x[
0,3
] | % {
"Number: $_"
}
Similar to the | a comma will also work in some contexts:
1,
2
Keep in mind, though, similar to JavaScript's Automatic Semicolon Insertion, there are some things that are similarly broken because the line break occu...
What is a C++ delegate?
...ouble d)> f = std::bind(&MyClass::DoStuff, this, std::placeholders::_1);
// auto f = std::bind(...); in C++11
Option 7: templates
Accept anything as long as it matches the argument list.
template <class FunctionT>
int DoSomething(FunctionT func)
{
return func(3.14);
}
...
How to decode HTML entities using jQuery?
... $("<div/>").html('<img src="http://www.google.com/images/logos/ps_logo2.png" onload=alert(1337)>'). In Firefox or Safari it fires the alert.
– Mike Samuel
Mar 16 '11 at 20:37
...
How do I efficiently iterate over each entry in a Java Map?
...
Benchmark Mode Cnt Score Error Units
test3_UsingForEachAndJava8 avgt 10 0.308 ± 0.021 µs/op
test10_UsingEclipseMap avgt 10 0.309 ± 0.009 µs/op
test1_UsingWhileAndMapEntry avgt 10 0.380 ± 0.014 µs/op
test6_UsingForAndIte...