大约有 24,000 项符合查询结果（耗时：0.0364秒） [XML]
How do I retrieve the number of columns in a Pandas data frame?
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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...专门配备了几台高性能务器，清一色的双路四核超线程CPU，外加32G内存，运维人员安装好MongoDB后，就交我手里了，我习惯于在使用新服务器前先看看相关日志，了解一下基本情况，当我浏览MongoDB日志时，发现一些警告信息：
WA...
How do I grant myself admin access to a local SQL Server instance?
...oft has an article about this issue. It goes through it all step by step.
https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/connect-to-sql-server-when-system-administrators-are-locked-out
In short it involves starting up the instance of sqlserver with -m like all the other ans...
How to 'minify' Javascript code
...og([1,3,5,8,9].indexOf(a)!=-1?'yes':'no');
but indexOf is slow read this https://stackoverflow.com/a/30335438/2450730
numbers
1000000000000
//same as
1e12
var oneDayInMS=1000*60*60*24;
//same as
var oneDayInMS=864e5;
var a=10;
a=1+a;
a=a*2;
//same as
a=++a*2;
Some nice articles/sites i foun...
Color picker utility (color pipette) in Ubuntu [closed]
I'am looking for a color picker utility on Ubuntu/Debian.
Anything simple and easy to use.
2 Answers
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Should I mix AngularJS with a PHP framework? [closed]
AngularJS is very powerful when it comes to interactive HTML5 and model binding. On the other hand, PHP frameworks like Yii enable quick, well-structured, safe and powerful web application development. Both technologies provide sophisticated means for data access, iteration and page layouting.
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What should every programmer know about security? [closed]
...n university. Until now we've been studing a lot of subjects related to computers in general (programming, algorithms, computer architecture, maths, etc).
...
Deserialize JSON to ArrayList using Jackson
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Using Linq to group a list of objects into a new grouped list of list of objects
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How to assign colors to categorical variables in ggplot2 that have stable mapping?
I've been getting up to speed with R in the last month.
5 Answers
5
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