大约有 43,000 项符合查询结果（耗时：0.0595秒） [XML]
Should you always favor xrange() over range()?
...might prefer range():
In python 3, range() does what xrange() used to do and xrange() does not exist. If you want to write code that will run on both Python 2 and Python 3, you can't use xrange().
range() can actually be faster in some cases - eg. if iterating over the same sequence multiple time...
I want to get Year, Month, Day, etc from Java Date to compare with Gregorian Calendar date in Java.
....add(Calendar.DAY_OF_MONTH, -48) to do day arithmetic on Calendar objects. And you can compare two Calendar objects using cal.compareTo(anotherCal).
– Florent Guillaume
Feb 27 '12 at 23:55
...
Best Practice for Forcing Garbage Collection in C#
...need them. If you have custom objects, look at using the "using statement" and the IDisposable interface.
This link has some good practical advice with regards to freeing up memory / garbage collection etc:
http://msdn.microsoft.com/en-us/library/66x5fx1b.aspx
...
Securely storing environment variables in GAE with app.yaml
I need to store API keys and other sensitive information in app.yaml as environment variables for deployment on GAE. The issue with this is that if I push app.yaml to GitHub, this information becomes public (not good). I don't want to store the info in a datastore as it does not suit the project...
How costly is .NET reflection?
...ntly hear how bad reflection is to use. While I generally avoid reflection and rarely find situations where it is impossible to solve my problem without it, I was wondering...
...
How do I pass values to the constructor on my wcf service?
... need to implement a combination of custom ServiceHostFactory, ServiceHost and IInstanceProvider.
Given a service with this constructor signature:
public MyService(IDependency dep)
Here's an example that can spin up MyService:
public class MyServiceHostFactory : ServiceHostFactory
{
private...
How to use base class's constructors and assignment operator in C++?
I have a class B with a set of constructors and an assignment operator.
5 Answers
5
...
How do I check if a list is empty?
...
Playing devil's advocate. I don't understand why this idiom is considered pythonic. 'Explicit is better then implicit', correct? This check doesn't seem very explicit about what is is checking.
– James McMahon
Nov 22 '11 at 6:1...
Is it safe to delete a NULL pointer?
...elete performs the check anyway, so checking it on your side adds overhead and looks uglier. A very good practice is setting the pointer to NULL after delete (helps avoiding double deletion and other similar memory corruption problems).
I'd also love if delete by default was setting the parameter t...
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
...ity between systems with different screen resolution.)
Some (incomplete, and unfortunately the links are broken due to migration of SwingLabs to java.net) technical reasons are for instance mentioned in the Rules (hehe) or in the link @bendicott found in his/her comment to my answer. Socially, pos...