大约有 40,700 项符合查询结果(耗时:0.0415秒) [XML]
What is the difference between char array and char pointer in C?
...r[] are different types, but it's not immediately apparent in all cases. This is because arrays decay into pointers, meaning that if an expression of type char[] is provided where one of type char* is expected, the compiler automatically converts the array into a pointer to its first element.
Your ...
How does Facebook disable the browser's integrated Developer Tools?
So apparently because of the recent scams, the developer tools is exploited by people to post spam and even used to "hack" accounts. Facebook has blocked the developer tools, and I can't even use the console.
...
What does if __name__ == “__main__”: do?
...and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your question about the __name__ checks we always see in Python scripts.
Code Sample
Let's use a slightly different code sample to explore how imports and scripts work. Suppose the following is...
Should I implement __ne__ in terms of __eq__ in Python?
...ou define __eq__:
There are no implied relationships
among the comparison operators. The
truth of x==y does not imply that x!=y
is false. Accordingly, when defining
__eq__(), one should also define __ne__() so that the operators will behave as expected.
In a lot of cases (such as this ...
What is the Git equivalent for revision number?
...ects I decided to use Git. So I installed Git yesterday, and I wonder what is the revision number equivalent in Git .
19...
When should I use a struct rather than a class in C#?
When should you use struct and not class in C#? My conceptual model is that structs are used in times when the item is merely a collection of value types . A way to logically hold them all together into a cohesive whole.
...
What is the difference between HTTP status code 200 (cache) vs status code 304?
...e of the asset or appending a version string to requests for that asset. This eliminates the need for any request to be made unless the asset has definitely changed from the version in cache (no need for that 304 response). Google has more details on correct use of long-term caching.
...
jQuery pass more parameters into callback
Is there a way to pass more data into a callback function in jQuery?
14 Answers
14
...
How do getters and setters work?
...
Tutorial is not really required for this. Read up on encapsulation
private String myField; //"private" means access to this is restricted
public String getMyField()
{
//include validation, logic, logging or whatever you like he...
What are the differences between a HashMap and a Hashtable in Java?
...are several differences between HashMap and Hashtable in Java:
Hashtable is synchronized, whereas HashMap is not. This makes HashMap better for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashM...
