大约有 14,000 项符合查询结果（耗时：0.0170秒） [XML]
CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...迟的。据统计，采用CDN技术，能处理整个网站页面的70%～95％的内容访问量，减轻服务器的压力，提升了网站的性能和可扩展性。
与目前现有的内容发布模式相比较，CDN强调了网络在内容发布中的重要性。通过引入主动的内容...
Apply multiple functions to multiple groupby columns
... 1]
df
a b c d group
0 0.418500 0.030955 0.874869 0.145641 0
1 0.446069 0.901153 0.095052 0.487040 0
2 0.843026 0.936169 0.926090 0.041722 1
3 0.635846 0.439175 0.828787 0.714123 1
A dictionary mapped from column names to aggr...
What are the differences between delegates and events?
...
95
In addition to the syntactic and operational properties, there's also a semantical difference. ...
Cluster analysis in R: determine the optimal number of clusters
...145907 0.04057451
[3,] 4.557779 5.069601 0.5118225 0.03215540
[4,] 3.928959 4.880453 0.9514943 0.04630399
[5,] 3.789319 4.766903 0.9775842 0.04826191
[6,] 3.747539 4.670100 0.9225607 0.03898850
[7,] 3.582373 4.590136 1.0077628 0.04892236
[8,] 3.528791 4.509247 0.9804556 0.04701930
[9,] ...
To underscore or to not to underscore, that is the question
...
Andreas Grech
95.7k9595 gold badges282282 silver badges354354 bronze badges
answered Jan 16 '09 at 12:14
Binary Wor...
How to read a text file reversely with iterator in C#
...e.ReadLines().Reverse() to print last line of same file - memory usage was 95MB.
Conclusion
Whatever `Reverse()' is doing, it is not a good choice for reading bottom of a big file.
share
|
improve...
Parse JSON in C#
...
Andreas GrechAndreas Grech
95.7k9595 gold badges282282 silver badges354354 bronze badges
...
Difference between std::system_clock and std::steady_clock?
...
Billy ONealBilly ONeal
95.4k4141 gold badges279279 silver badges518518 bronze badges
...
What is the motivation for bringing Symbols to ES6?
...
95
Most languages (all mainstream ones afaik) provide some mechanism, usually reflection, to get access to private anyway.
...
Efficiently replace all accented characters in a string?
...\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g},
{'base':'Q', 'letters':/[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g},
{'base':'R', 'letters':/[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g},
{'base':'S', 'letters':/[\u0053\u24C8\uFF33\u1...