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微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术
...剩余140字母留给用户发挥。
此外，YAHOO!的meme（2,000字）和Google的Buzz（没有限制）等对字数都没有短而精的要求，在这个层面上，算不上微博，只能算轻量级博客，暂不相提并论。
国内微博为什么也限制140字
如果按照160字是...
When do items in HTML5 local storage expire?
...lue: "value", timestamp: new Date().getTime()}
localStorage.setItem("key", JSON.stringify(object));
You can parse the object, get the timestamp and compare with the current Date, and if necessary, update the value of the object.
var object = JSON.parse(localStorage.getItem("key")),
dateString...
npm - how to show the latest version of a package
...:
npm list --depth=0 | grep <module_name>
Note, even with package.json declaring your versions, the installed version might actually differ slightly - for instance if tilda was used in the version declaration
Should work across NPM versions 1.3.x, 1.4.x, 2.x and 3.x
...
What is the “main file” property when doing bower init?
...irectly use these files, they are listed with the
commands bower list --json andbower list --paths, so they can be used
by build tools.
Preprocessor files like CoffeeScript should be compiled.Do not include
minified files.Filenames should not be versioned (Bad:
package.1.1.0.js; Good:...
使用std::string作为std::map的key出错解决 - C/C++ - 清泛网 - 专注C/C++及内核技术
使用std::string作为std::map的key出错解决c: program files (x86) microsoft visual studio 11.0 vc include xstddef(180): error C2784: bool std::operator <(const st...c:\program files (x86)\microsoft visual studio 11.0\vc\include\xstddef(180): error C2784: “bool std::operator <(const std:...
RabbitMQ / AMQP: single queue, multiple consumers for same message?
...yload) {
console.log('about to publish')
var encoded_payload = JSON.stringify(payload);
exchange.publish('', encoded_payload, {})
}
// Recieve messages
connection.queue("my_queue_name", function(queue){
console.log('Created queue')
queue.bind(exchange, '');...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...的逻辑。上手很容易，但是由于代码块提供的功能有限，使用比较单一，在开发上有很大的局限性，但是它提供了拓展Extension特性，开放了源码，使得开发者可以根据自己的需要，自定义开发原生组件实现不了的、更加强大的功...
Convert form data to JavaScript object with jQuery
...
Convert forms to JSON like a boss
The current source is on GitHub and Bower.
$ bower install jquery-serialize-object
The following code is now deprecated.
The following code can take work with all sorts of input names; and handle ...
How to send a header using a HTTP request through a curl call?
...
GET:
with JSON:
curl -i -H "Accept: application/json" -H "Content-Type: application/json" http://hostname/resource
with XML:
curl -H "Accept: application/xml" -H "Content-Type: application/xml" -X GET http://hostname/resource
POS...
不到20个积木块，我用App Inventor 2给女儿做了个接星星小游戏 - App应用开...
...对齐手指位置，体验更自然。
第五步：碰撞检测
Ball和ImageSprite之间可以互相检测碰撞。Ball的 被碰撞时 事件：
当 Star.被碰撞时(其他精灵)
设置 分数 为 分数 + 1
调用 Star.移动到指定位置(x: 随机整数从1...