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升级Win10后C盘告急：一招释放硬盘空间 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...间，那么你就应该考虑删除Windows 10的升级文件和旧版本操作系统文件了。
这些文件同样被显示在文件清理列表当中，勾选后可以清理。但需要注意的是，删除Windows 10升级文件和旧版本系统文件后，你将无法从Windows 10回滚...
汇编语言（王爽著）附书签 - 文档下载 - 清泛网 - 专注C/C++及内核技术
...系统进行工作。汇编语言是很多相关课程(如数据结构、操作系统、微机原理等)的重要基础。为了更好地引导、帮助读者学习汇编语言，作者以循序渐进的思想精心创作了这本书。本书具有如下特点：采用了全新的结构对课程的...
How can I add a key/value pair to a JavaScript object?
...
what if the key is a number? obj.123 = 456 doesn't work. obj[123] = 456 does work though
– axel freudiger
Nov 2 '12 at 10:39
13
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Is it possible to define more than one function per file in MATLAB, and access them from outside tha
...t;> makefuns
ans =
Done importing functions to workspace
>> fun1(123)
ans =
123
>> fun2()
ans =
1
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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...层的代码不够高效，第二：所有的事情必须要转化成两个操作Map/Reduce，这本身就很奇怪，也不能解决所有的情况。
Spark从何而来？Spark相比于Hadoop MapReduce设计上有什么样的优势？
其实Spark出现就是为了解决上面的问题。先说一...
Creating PHP class instance with a string
...ther cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$obj...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...ommand: ipconfig and hit Enter.
Look for: IPv4 Address . . . . . . . . 12.123.123.00
There are websites that will also display your IP address
If you don't have Python, download and install it.
Using the 'Command Prompt' you must go to the folder where the files are that you want to serve as a w...
携程遭超长宕机：内部数据管理恐存严重漏洞 - 资讯 - 清泛网 - 专注C/C++及内核技术
...往往只是悄无声息地拿走核心数据，一般不会进行破坏性操作”。
腾讯安全专家分析称，根据目前官方透露的信息判断，携程网站数据层、网络层均没问题，那么问题就在应用层或存储逻辑层。很可能关键性的系统部署和配置...
Fastest way to count exact number of rows in a very large table?
...nly speculate. Does the db maintenance process find out that there are 42,123,876 rows in table A and then create 42,123,876 empty rows in table B, and then loop through table A and update the rows in table B...? Or is it crazier than that? ;-)
– Tony Andrews
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Ruby replace string with captured regex pattern
...note that you can index a string with a regex:
"foo"[/oo/]
#=> "oo"
"Z_123: foobar"[/^Z_.*(?=:)/]
#=> "Z_123"
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