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How do you match only valid roman numerals with a regular expression?
...} (with L not there)
20: XX matched by L?X{2} (with L not there)
30: XXX matched by L?X{3} (with L not there)
40: XL matched by XL
50: L matched by L?X{0} (with L there)
60: LX matched by L?X{1} (with L there)
70: LXX matched by L?X{2} (with L there)
80: LXXX m...
How to convert CharSequence to String?
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91
There is a subtle issue here that is a bit of a gotcha.
The toString() method has a base imple...
Remove duplicated rows using dplyr
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hadleyhadley
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What is token-based authentication?
... You might want to read "Stop using JWT for sessions": cryto.net/~joepie91/blog/2016/06/13/stop-using-jwt-for-sessions
– Juraj Martinka
Apr 4 '17 at 13:45
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Difference between decimal, float and double in .NET?
..., and we know that those distances never have more than one decimal digit (xxx.x km).
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Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...市场的广阔前景。据艾瑞咨询于2014年7月1日发布的《中国在线租车行业研究报告》，2013年，中国租车市场规模为343.4亿元，2006年至2016年10年间，平均增速26%，预计到2016年，租车市场规模将达486.7亿元。
巨额补贴滋生出了一项新...
The shortest possible output from git log containing author and date
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91
Feel free to use this one:
git log --pretty="%C(Yellow)%h %C(reset)%ad (%C(Green)%cr%C(reset)...
Labels for radio buttons in rails form
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There is another way, too: passing a :value option to f.label will do the same thing. e.g. <%= f.label :contactmethod, 'SMS', :value =&g...
Why aren't ◎ܫ◎ and ☺ valid JavaScript variable names?
...5\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0...
What is a dependency property?
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The only explanation I found helpful and well written is this one: http://www.wpftutorial.net/d...