大约有 42,000 项符合查询结果（耗时：0.0638秒） [XML]
Why is the shovel operator (
...g a new one. The reason for this is that in ruby a += b is syntactic shorthand for a = a + b (the same goes for the other <op>= operators) which is an assignment. On the other hand << is an alias of concat() which alters the receiver in-place.
...
Changing Locale within the app itself
... I used this question as a starting point for my own locale switching code and found out that the method is not exactly correct. It works, but only until any configuration change (e.g. screen rotation) and only in that particular Activity. Playing with a code for a while I have ended up with the fol...
Android Studio - local path doesn't exist
After updating Android Studio to 0.2.4 I can't get my project to deploy. There is a complete mismatch of the apk filename.
...
When should I use @classmethod and when def method(self)?
...
Your guess is correct - you understand how classmethods work.
The why is that these methods can be called both on an instance OR on the class (in both cases, the class object will be passed as the first argument):
class Dummy(object):
@classmethod
d...
What does T&& (double ampersand) mean in C++11?
I've been looking into some of the new features of C++11 and one I've noticed is the double ampersand in declaring variables, like T&& var .
...
When should I use Struct vs. OpenStruct?
In general, what are the advantages and disadvantages of using an OpenStruct as compared to a Struct? What type of general use-cases would fit each of these?
...
How do I send a cross-domain POST request via JavaScript?
...
Update: Before continuing everyone should read and understand the html5rocks tutorial on CORS. It is easy to understand and very clear.
If you control the server being POSTed, simply leverage the "Cross-Origin Resource Sharing standard" by setting response headers on the...
Comparing strings with == which are declared final in Java
...n Java. The following segment of simple code just concatenates two strings and then compares them with == .
6 Answers
...
How can I handle time zones in my webapp?
I'm looking for better understanding of the following user story:
7 Answers
7
...
Print only?
...
this is by far the fastest and cleanest way, i wonder why this answer didn't get the most votes -.-
– Dany Khalife
Nov 6 '11 at 21:14
...