大约有 40,000 项符合查询结果（耗时：0.0426秒） [XML]
How to remove all of the data in a table using Django
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Inside a manager:
def delete_everything(self):
Reporter.objects.all().delete()
def drop_table(self):
cursor = connection.cursor()
table_name = self.model._meta.db_table
sql = "DROP TABLE %s;" % (table_name, )
cursor.execute(sql)
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How to condense if/else into one line in Python? [duplicate]
...ompress an if / else statement to one line in Python?
I oftentimes see all sorts of shortcuts and suspect it can apply here too.
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Deciding between HttpClient and WebClient
Our web app is running in .Net Framework 4.0. The UI calls controller methods through ajax calls.
7 Answers
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SQL update query using joins
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I usually start with semicolon to terminate previous statement (if any). CTE rocks ! Simple to design complicated query / joined updates. I use it all the time...
– Adam W
Dec 17 '15 at 5:19
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Update data in ListFragment as part of ViewPager
... can get by, using its instantiateItem(ViewGroup container, int position) call. It returns reference to fragment at position position. If FragmentStatePagerAdapter already holds reference to fragment in question, instantiateItem just returns reference to that fragment, and doesn't call getItem() to ...
Remove a string from the beginning of a string
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Plain form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
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C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...从缓冲区中取出消息
MessageBuffer.h
//MessageBuffer.h
#ifndef _MESSAGE_BUF_INCLUDE_
#define _MESSAGE_BUF_INCLUDE_
#include <pthread.h>
#define MESSAGE_COUNT 16
#define MESSAGE_LENGTH 2048
class MessageBuffer{
private:
pthread_mutex_t mutex;//访问缓冲的互斥量
pthread_...
Force line-buffering of stdout when piping to tee
Usually, stdout is line-buffered. In other words, as long as your printf argument ends with a newline, you can expect the line to be printed instantly. This does not appear to hold when using a pipe to redirect to tee .
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Sublime Text 3能用支持的插件推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...管理
sublime text非常强大的插件管理的插件，按下Ctrl+Shift+P，输Package control就可以选择插件的安装、管理、删除等操作，因为sublime text 3的插件需要基于pyhone 3编写，所以用sublime text 2的安装方法不管用，可以看看我之前写的一篇...
What is the difference between ng-app and data-ng-app?
...They expect non default HTML attributes to be prefaced with
data-attribute_name_here.
So, the creators of AngularJS have created alternate names for their directives that include the data- in front of them so that HTML validator programs will "like" them.
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