大约有 10,700 项符合查询结果（耗时：0.0195秒） [XML]
vs in Generics
...The second line above would fail if this wasn't covariant, even though logically it should work, since string derives from object. Before variance in generic interfaces was added to C# and VB.NET (in .NET 4 with VS 2010), this was a compile time error.
After .NET 4, IEnumerable<T> was marked...
How to do a PUT request with curl?
...g with whatever HTTP verb you want:
curl -X PUT -d arg=val -d arg2=val2 localhost:8080
This example also uses the -d flag to provide arguments with your PUT request.
share
|
improve this answer
...
What does git rev-parse do?
...t such as --short for printing a shorter unique SHA1.
There are other use cases as well (in scripts and other tools built on top of git) that I've used for:
--verify to verify that the specified object is a valid git object.
--git-dir for displaying the abs/relative path of the the .git directory...
How to alias a table in Laravel Eloquent queries (or using Query Builder)?
...
@RubensMariuzzo I know. I believe you can leave a comment with request in laravel forums forums.laravel.io
– peterm
Jul 18 '13 at 3:31
2
...
background:none vs background:transparent what is the difference?
...
@herman — No, they can't. This is the same as background-color: transparent; background-image: none;. A user stylesheet might override one or both of those values, but it will do so exactly as if background-color: transparent; background-image:...
Nullable type issue with ?: Conditional Operator
... ? (DateTime?)null : new DateTime(0);
Note that Nullable<DateTime> can be written DateTime? which will save you a bunch of typing.
share
|
improve this answer
|
follo...
Difference between web reference and service reference?
...s your code to talk to a Web Service that is described via WSDL and communicates via SOAP or HTTP GET (other posters indicate that it is only ASMX, but Web References can also talk to Java-based Web Services or Python-based or Ruby so long as they all talk WSDL and conform to the WS-I interoperabili...
C#: Raising an inherited event
...class (where you have declared the events), create protected methods which can be used to raise the events:
public class MyClass
{
public event EventHandler Loading;
public event EventHandler Finished;
protected virtual void OnLoading(EventArgs e)
{
EventHandler handler = Loadin...
What does the M stand for in C# Decimal literal notation?
...
Although it has been suggested that M
stands for money, Peter Golde recalls
that M was chosen simply as the next
best letter in decimal.
A similar annotation mentions that early versions of C# included "Y" and "S" for byte and short literals respectively. They were dropped on the grounds ...
Difference between two dates in Python
...
I get TypeError: 'int' object is not callable when I try to do .days() on a timedelta object and the documentation makes not mention of it either (docs.python.org/2/library/datetime.html).
– user1761806
Jun 26 '17 at 10:46
...