大约有 31,840 项符合查询结果（耗时：0.0578秒） [XML]
Setting variable to NULL after free
...
I personally think that in any none-trivial codebase getting an error for dereferencing null is as vague as getting an error for dereferencing an address you don't own. I personally never bother.
– wilhelmtell
Dec 8 '1...
Days between two dates? [duplicate]
...
Assuming you’ve literally got two date objects, you can subtract one from the other and query the resulting timedelta object for the number of days:
>>> from datetime import date
>>> a = date(2011,11,24)
>>> b = date(2011,11,17)
>>> a-b
datetime.timedel...
Copy/duplicate database without using mysqldump
Without local access to the server, is there any way to duplicate/clone a MySQL db (with content and without content) into another without using mysqldump ?
...
Why do std::shared_ptr work
...nter ‘void ( void* )‘ you are performing the type erasure there: T is gone from the stored pointer type.
– David Rodríguez - dribeas
Nov 16 '11 at 10:05
1
...
Daylight saving time and time zone best practices [closed]
... to store both the UTC time and the equivalent local time. Often this is done with two separate fields, but some platforms support a datetimeoffset type that can store both in a single field.
When storing timestamps as a numeric value, use Unix time - which is the number of whole seconds since 1970...
What is the purpose of Serialization in Java?
...a number of articles on Serialization and how it is so nice and great but none of the arguments were convincing enough. I am wondering if someone can really tell me what is it that we can really achieve by serializing a class?
...
Regular expression to search for Gadaffi
...bic transcription is (Wiki says) "Qaḏḏāfī", so maybe adding a Q. And one H ("Gadhafi", as the article (see below) mentions).
Btw, why is there a $ at the end of the regex?
Btw, nice article on the topic:
Gaddafi, Kadafi, or Qaddafi? Why is the Libyan leader’s name spelled so many differ...
Sample settings.xml for maven
...TF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (t...
How can I change the color of my prompt in zsh (different from normal text)?
...hat it is visibly different from the programs output. As I use zsh, can anyone give me a hint?
10 Answers
...
What is the etymology of 'slug'? [closed]
...Or does it stand for something? I used the word in a conversation with someone and when they asked me why it's called that I realized I didn't know.
...