大约有 43,000 项符合查询结果（耗时：0.0595秒） [XML]
__FILE__ macro shows full path
The standard predefined macro __FILE__ available in C shows the full path to the file. Is there any way to short the path? I mean instead of
...
Why aren't superclass __init__ methods automatically invoked?
...methods of their superclasses, as in some other languages? Is the Pythonic and recommended idiom really like the following?
...
Immutability of Strings in Java
...
str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct String objects. Thus, str points to a string. You can change what it points to, but not that which it points at.
Take this code, for example:
String s1 = "Hello";
String s2 = s1;
// s1 and s2 now ...
When is “i += x” different from “i = i + x” in Python?
I was told that += can have different effects than the standard notation of i = i + . Is there a case in which i += 1 would be different from i = i + 1 ?
...
What are “first class” objects?
...r something else said to be "first class" in a given programming language, and why? In what do they differ from languages where they are not?
...
How does __proto__ differ from constructor.prototype?
...
I've been trying to wrap my head around this recently and finally came up with this "map" that I think sheds full light over the matter
http://i.stack.imgur.com/KFzI3.png
I know I'm not the first one making this up but it was more interesting figuring it out that finding it ...
What's a correct and good way to implement __hash__()?
What's a correct and good way to implement __hash__() ?
6 Answers
6
...
Is there a Python caching library?
...nything so far. I need a simple dict -like interface where I can set keys and their expiration and get them back cached. Sort of something like:
...
How to print out the method name and line number and conditionally disable NSLog?
I'm doing a presentation on debugging in Xcode and would like to get more information on using NSLog efficiently.
13 Answer...
Understanding the main method of python [duplicate]
...ed" % __file__)
Using this convention one can have a file define classes and functions for use in other programs, and also include code to evaluate only when the file is called as a standalone script.
It's important to understand that all of the code above the if __name__ line is being executed, ...