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What is a JavaBean exactly?
...
A JavaBean is just a standard
All properties private (use getters/setters)
A public no-argument constructor
Implements Serializable.
That's it. It's just a convention. Lots of libraries depend on it though.
With respect to Serializable, from the API d...
Why does C# forbid generic attribute types?
...pful information either, although it does provide an example of what's not allowed.
My copy of the annotated C# 3 spec should arrive tomorrow... I'll see if that gives any more information. Anyway, it's definitely a language decision rather than a runtime one.
EDIT: Answer from Eric Lippert (parap...
String formatting in Python 3
...format(goals=2, penalties=4)
"({goals} goals, ${penalties})".format(**self.__dict__)
"first goal: {0.goal_list[0]}".format(self)
"second goal: {.goal_list[1]}".format(self)
"conversion rate: {:.2f}".format(self.goals / self.shots) # '0.20'
"conversion rate: {:.2%}".format(self.goals / self.shots) ...
Is it possible to use JavaScript to change the meta-tags of the page?
...
@bobince: Actually, the SKYPE_TOOLBAR one still takes effect if you insert it with js (which is useful as html5 validator doesn't like that meta tag).
– DaedalusFall
Nov 15 '11 at 13:23
...
Declare a block method parameter without using a typedef
...ssue benefits from multiple):
@implementation CallbackAsyncClass {
void (^_loginCallback) (NSDictionary *response);
}
// …
- (void)loginWithCallback:(void (^) (NSDictionary *response))handler {
// Do something async / call URL
_loginCallback = Block_copy(handler);
// response will c...
warning C4996 - C/C++ - 清泛网 - 专注C/C++及内核技术
warning C4996warning C4996: '_vsnprintf': This function or variable may be unsafe. ......warning C4996: strcpy was declar...warning C4996: '_vsnprintf': This function or variable may be unsafe. ......
warning C4996: strcpy was declared deprecated
出现这样的警告，是因为VC2005之后的版...
[源码实例] c/c++获取网卡mac地址 - C/C++ - 清泛网 - 专注C/C++及内核技术
...fx.h>#include < nb30.h > #pragma comment(lib,"netapi32.lib")typedef struct _ASTAT...代码如下：
#include "stdafx.h"
#include <afx.h>
#include < nb30.h >
#pragma comment(lib,"netapi32.lib")
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * P...
[工程源码实例] C++ ADO 读写Excel源码及注意点 - C/C++ - 清泛网 - 专注C/C++及内核技术
...！！
#import "C:\Program Files\Common Files\System\ADO\msado15.dll" no_namespace rename("EOF", "adoEOF") rename("BOF", "adoBOF")
...
//连接字符串(这里是Excel 2003, 2007的Extended Properties="Excel 12.0 Xml;貌似找不到驱动，有解决的烦请评论告知下)
"Provider='Mic...
在MongoDB中模拟Auto Increment - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...言以PHP为例，代码大致如下所示：
<?php
function generate_auto_increment_id($namespace, array $option = array())
{
$option += array(
'init' => 1,
'step' => 1,
);
$instance = new Mongo();
$instance = $instance->selectCollection('_seq', 'seq...
领域驱动设计系列（五）:事件驱动之异步事件 - 更多技术 - 清泛网 - 专注C/...
... Publish<T>(T concreteEvent) where T: Event
{
var handlers = _container.ResolveAll<IEventHandler<T>>();
foreach (var handle in handlers)
{
handle.Handle(concreteEvent);
}
}
}
为了提高性能，我们可以先来第一步改进
pub...