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Convert data.frame column to a vector?
... joranjoran
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Change MySQL default character set to UTF-8 in my.cnf?
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431
To set the default to UTF-8, you want to add the following to my.cnf
[client]
default-charact...
海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...前的量级和未来的增长，2天大概在2000w — 5000w 中间。
4、短文本和长文本都要去重，经过测试长文本使用simhash效果很好，短文本使用simhash 准备度不高。
目前我们估算一下存储空间的大小，就以JAVA 来说，存储一个simhash 需...
Get number of digits with JavaScript
...rs (including negatives) there is a brilliant optimised solution from @Mwr247, but be careful with using Math.log10, as it is not supported by many legacy browsers. So replacing Math.log10(x) with Math.log(x) * Math.LOG10E will solve the compatibility problem.
Creating fast mathematical solutions f...
How to nicely format floating numbers to String without unnecessary decimal 0?
An 64-bit double can represent integer +/- 2 53 exactly
26 Answers
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Python element-wise tuple operations like sum
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edited Sep 27 '10 at 11:14
community wiki
2 re...
How does python numpy.where() work?
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answered Apr 12 '11 at 22:48
Joe KingtonJoe Kington
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Creating a simple XML file using python
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These days, the most popular (and very simple) option is the ElementTree API,
which has been inc...
“for loop” with two variables? [duplicate]
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edited Sep 6 '13 at 17:45
answered Sep 6 '13 at 1:55
Set...
Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
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Good solution, but the ToArray() isn't necessary with .NET 4 as there is an overload which accepts any IEnumerable<string>.
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