大约有 15,500 项符合查询结果（耗时：0.0526秒） [XML]
In C#, why is String a reference type that behaves like a value type?
...lue type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object.
...
Mongodb Explain for Aggregation framework
Is there an explain function for the Aggregation framework in MongoDB? I can't see it in the documentation.
3 Answers
...
Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?
...t to the package's \lib\ folder, with the right subfolder (\lib\net40 for example)
Content files are copied from the packages \content\ folder, with the right subfolder (\content\net40 for example)
We record the targetFramework used to install the package within the packages.config file
After you ch...
Check if at least two out of three booleans are true
...
1
2
3
Next
826
...
What is exactly the base pointer and stack pointer? To what do they point?
Using this example coming from wikipedia, in which DrawSquare() calls DrawLine(),
8 Answers
...
What is a “thread” (really)?
... includes the Instruction Pointer (aka Program Counter), it controls what executes in what order. It also includes the Stack Pointer, which had better point to a unique area of memory for each thread or else they will interfere with each other.
Threads are the software unit affected by control flo...
What is the difference between named and positional parameters in Dart?
...A parameter wrapped by [ ] is a positional optional parameter. Here is an example:
getHttpUrl(String server, String path, [int port=80]) {
// ...
}
In the above code, port is optional and has a default value of 80.
You can call getHttpUrl with or without the third parameter.
getHttpUrl('exa...
What kind of Garbage Collection does Go use?
...(parallel implementation)
non-generational
non-compacting
mostly precise (except stack frames)
stop-the-world
bitmap-based representation
zero-cost when the program is not allocating memory (that is: shuffling pointers around is as fast as in C, although in practice this runs somewhat slower than C ...
How do I set a cookie on HttpClient's HttpRequestMessage
...a custom cookie value for the request:
var baseAddress = new Uri("http://example.com");
var cookieContainer = new CookieContainer();
using (var handler = new HttpClientHandler() { CookieContainer = cookieContainer })
using (var client = new HttpClient(handler) { BaseAddress = baseAddress })
{
v...
How to get the raw value an field?
...t and do something with it, you'd have to rely on the old tried and true text input field and parse the content yourself.
The W3 also has the same specs and adds:
User agents must not allow the user to set the value to a non-empty
string that is not a valid floating-point number.
...