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Get a random boolean in python?
...ndom import getrandbits" "not getrandbits(1)"
10000000 loops, best of 3: 0.222 usec per loop
$ python -m timeit -s "from random import random" "True if random() > 0.5 else False"
10000000 loops, best of 3: 0.0786 usec per loop
$ python -m timeit -s "from random import random" "random() > 0.5"
...
Convert javascript array to string
... array, such code will work fine:
var value = { "aaa": "111", "bbb": "222", "ccc": "333" };
var blkstr = [];
$.each(value, function(idx2,val2) {
var str = idx2 + ":" + val2;
blkstr.push(str);
});
console.log(blkstr.join(", "));
<script src="https://ajax.googlea...
Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...精确。”Uber在杭州目前的平均叫车到达时间为3分钟。“我们的目标是做到平均两分钟。”
随着注册用户和司机的增长，Uber还开发出根据大数据预先判断不同时段不同地区用户数量的系统，将预测信息推送给司机，以方便司机...
What are the undocumented features and limitations of the Windows FINDSTR command?
...s 043 220 treated as 095 252 treated as 110
196 treated as 045 222 treated as 221 254 treated as 221
197 treated as 043 223 treated as 095
198 treated as 221 224 treated as 097
Any character >0 not in the list above is treated as itself, including <CR> and <LF>...
Creating a UIImage from a UIColor to use as a background image for UIButton [duplicate]
...
Add the dots to all values:
[[UIColor colorWithRed:222./255. green:227./255. blue: 229./255. alpha:1] CGColor]) ;
Otherwise, you are dividing float by int.
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C＋＋模板的特化 - C/C++ - 清泛网 - 专注C/C++及内核技术
...难界定了，而且很多权威的书上都不一致，管它呢，反正我们能会用各种特化就可以了。
下面就谈谈我个人对特化的划分和定义：
所谓特化，就是将泛型的东东搞得具体化一些，从字面上来解释，就是为已有的模板参数进行...
do N times (declarative syntax)
...eres loop:
for( let i=5; i--; ){
// Do this 5 times:
console.log(222)
}
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How to sort a list of strings?
..., then print(x), you would see the sorted list.
– bjg222
Dec 30 '17 at 20:19
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笑话几则 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...后头走
司机说:钱投两块
大妈说:后头更凉快
嘻游记,我也是醉了
悟空化缘回来发现师父不见了，沙僧和八戒在地上哭。悟空问：“师父呢？”八戒说：“丢了。”悟空说：“找去呀！”沙僧说：“到处找遍了，没有。”悟...
C++读写EXCEL文件方式比较 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一般只能几个进行比较方便，所以速度可能要快很多。
我自己的亲身体会是，一个EXCEL文件，100多列的字段，如果采用一个个单元格的读取方式，1s大约3条左右的记录，如果整体读取，速度可以提高几十倍。
OLE读写EXCEL方式功...