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Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...用着。 例: Static Vector v = new Vector(10); for (int i = 1; i<100; i++) { Object o = new Object(); v.add(o); o = null; } 在这个例子中,循环申请Object 对象,并将所申请的对象放入一个Vector 中,如果仅仅释放引用本身(o=null),那么...
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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...不断的插入,代码如下: <?php for ($msgid = 1; $msgid <= 1000000; $msgid++) { $redis->sAdd('usr:<USRID>:msg', $msgid); } ?> 说明:这里我使用了SET数据类型,当然你也可以视需求换成LIST或者ZSET。 Redis的速度是很快的,但是借助PIPELINE,...
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Plot yerr/xerr as shaded region rather than error bars

...plot as pl import numpy as np pl.clf() pl.hold(1) x = np.linspace(0, 30, 100) y = np.sin(x) * 0.5 pl.plot(x, y, '-k') x = np.linspace(0, 30, 30) y = np.sin(x/6*np.pi) error = np.random.normal(0.1, 0.02, size=y.shape) +.1 y += np.random.normal(0, 0.1, size=y.shape) pl.plot(x, y, 'k', color='#CC4...
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如何抓住痛点做出让用户尖叫的产品 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...时候微信群是有人数限制的,默认好像是40,可以升级成100或更多。微信默认是隐藏昵称只显示头像的,群聊的人一多,就分不清到底谁是谁了,这时很多人就会去群设置中开启“显示群成员昵称”,加的群多了,每次都要去设...
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App Inventor 2 中文网原创内容 · App Inventor 2 中文网

...tor 2 添加超过10个屏幕会怎样? 【算法】如何计算1加到100的总和?(经典循环的写法) 【算法】App Inventor 2 算法之二分算法(Binary Search)实现,快速查找定位 组件用法 【微数据库】每次打开app时保持上一次关闭时的状...
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Draw in Canvas by finger, Android

...R_X*2, CENTER_Y*2); } private static final int CENTER_X = 100; private static final int CENTER_Y = 100; private static final int CENTER_RADIUS = 32; private int floatToByte(float x) { int n = java.lang.Math.round(x); return n; ...
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Center image in table td in CSS

...for me: &lt;style&gt; .super-centered { position:absolute; width:100%; height:100%; text-align:center; vertical-align:middle; z-index: 9999; } &lt;/style&gt; &lt;table class="super-centered"&gt;&lt;tr&gt;&lt;td style="width:100%;height:100%;" align="center" valign="mi...
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Is there a Google Voice API? [closed]

...xcessive given the current Google Voice interface. Each poll returns over 100K of content, so you'd use a quarter-gigabyte a day just polling every 30 seconds. There's a discussion on Google Code about this. share ...
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.prop() vs .attr()

... +100 Update 1 November 2012 My original answer applies specifically to jQuery 1.6. My advice remains the same but jQuery 1.6.1 changed t...
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How to prepare a Unity project for git? [duplicate]

...= # # OS generated # # ============ # .DS_Store .DS_Store? ._* .Spotlight-V100 .Trashes Icon? ehthumbs.db Thumbs.db share | improve this answer | follow | ...