大约有 16,000 项符合查询结果（耗时：0.0310秒） [XML]
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
... being created, just by looking at the code.
1. Avoid using new and raw-pointers though.
Sometime, the type is so irrelevant that the knowledge of the type is not even needed, such as in expression template; in fact, practically it is impossible to write the type (correctly), in such cases auto...
When to use AtomicReference in Java?
...oUpdate = cache.get();
//... do some work to transform cachedValueToUpdate into a new version
Object newValue = someFunctionOfOld(cachedValueToUpdate);
boolean success = cache.compareAndSet(cachedValue,cachedValueToUpdate);
Because of the atomic reference semantics, you can do this even if the cac...
Where can I find the “clamp” function in .NET?
...ains a using directive for the namespace e.g.
using Core.ExtensionMethods
int i = 4.Clamp(1, 3);
.NET Core 2.0
Starting with .NET Core 2.0 System.Math now has a Clamp method that can be used instead:
using System;
int i = Math.Clamp(4, 1, 3);
...
How to use null in switch
...e reason that the compiler doesn't complain about switch (i) where i is an Integer is because Java auto-unboxes the Integer to an int. As assylias already said, the unboxing will throw a NullPointerException when i is null.
* Since Java 7 you can use String in switch statements.
More about switch ...
Default implementation for Object.GetHashCode()
...e System {
public class Object {
[MethodImpl(MethodImplOptions.InternalCall)]
internal static extern int InternalGetHashCode(object obj);
public virtual int GetHashCode() {
return InternalGetHashCode(this);
}
}
}
InternalGetHashCode is mapped to...
Python, add trailing slash to directory string, os independently
...OS X, this returns the path unchanged; on case-insensitive filesystems, it converts the path to lowercase. On Windows, it also converts forward slashes to backward slashes.
Else you could look for something else on this page
...
Similarity String Comparison in Java
...m's String Metrics") can be found here (original link dead, so it links to Internet Archive)
Also check these projects:
Simmetrics
jtmt
share
|
improve this answer
|
foll...
ISO time (ISO 8601) in Python
I have a file. In Python, I would like to take its creation time, and convert it to an ISO time (ISO 8601) string while preserving the fact that it was created in the Eastern Time Zone (ET) .
...
Proper way to initialize a C# dictionary with values?
... the version of C# the OP is using, object/collection initializers weren't introduced until C# 3.0. The detail as to why it didn't work before has already been answered.
– James
Jun 11 '13 at 15:20
...
What are inline namespaces for?
...me the next standard, and the STL vendor just repeats the procedure again, introducing a new namespace for std::vector with emplace_back support (which requires C++11) and inlining that one iff __cplusplus == 201103L.
OK, so why do I need a new language feature for this? I can already do the follow...