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How do I calculate square root in Python?

...ethod can be computed as: sqrt = x**(float(1)/2) – VM_AI Sep 28 '18 at 10:41 add a comment  |  ...
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Java: Date from unix timestamp

... This is the right way: Date date = new Date (); date.setTime((long)unix_time*1000); share | improve this answer | follow | ...
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Set the value of a variable with the result of a command in a Windows batch file

...%a in ('command1 ^| command2') do set VAR=%%a. – Bill_Stewart Mar 4 '16 at 19:23 @Bill_Stewart you just saved my day, ...
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count(*) vs count(column-name) - which is more correct? [duplicate]

... COUNT(*) counts all rows COUNT(column) counts non-NULLs only COUNT(1) is the same as COUNT(*) because 1 is a non-null expressions Your use of COUNT(*) or COUNT(column) should be based on the desired output only. ...
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fstream默认不支持中文路径和输出整数带逗号的解决办法 - C/C++ - 清泛网 -...

... i << "/n"; //输出带逗号 outfile.close(); setlocale( LC_ALL, "C" ); //恢复全局locale,如果不恢复,可能导致cout无法输出中文 } 创建文件成功,在程序的“测试”文件下出现个test.txt文件。需要注意的是最后需要调用setlocale( ...
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MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...查询: db.getCollection("mobiles").find({ "params": { $all: [ {$elemMatch: {"name": "待机时间", "value": {$gt: 100}}}, {$elemMatch: {"name": "外观设计", "value": "直板"}} ] } }); 注:查询中用到的$all,$elemMatch等高...
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What does %w(array) mean?

....], curly braces %w{...} or even something like exclamation marks %w!...!. All of these have the same behavior (returning an array). – ryanb Aug 13 '09 at 21:40 146 ...
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Django DB Settings 'Improperly Configured' Error

...--settings=mysite.settings (or whatever settings module you use) Set DJANGO_SETTINGS_MODULE environment variable in your OS to mysite.settings (This is removed in Django 1.6) Use setup_environ in the python interpreter: from django.core.management import setup_environ from mysite import settings s...
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How to run a Runnable thread in Android at defined intervals?

... Alex, i have one small doubt.Now the thread is running perfectly and displaying the text continously, if i want to stop this means what i have to do?Please help me. – Rajapandian Dec 17 '09 at 14:19 ...
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How can I listen for a click-and-hold in jQuery?

...tartTrigger(e) { var $elem = $(this); $elem.data('mouseheld_timeout', setTimeout(function() { $elem.trigger('mouseheld'); }, e.data)); } function stopTrigger() { var $elem = $(this); clearTimeout($elem.data('mouseheld_timeout')); } ...