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Is there any significant difference between using if/else and switch-case in C#?
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348
SWITCH statement only produces same assembly as IFs in debug or compatibility mode. In release,...
How can you iterate over the elements of an std::tuple?
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answered Jul 29 '09 at 17:41
Éric MalenfantÉric Malenfant
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Find the day of a week
...ric weekday (0-6 starting on Sunday).
as.POSIXlt(df$date)$wday
## [1] 3 3 4
which you could use to subset a character vector of weekday names
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday")[as.POSIXlt(df$date)$wday + 1]
## [1] "Wednesday" "Wednesday" "Thursda...
grep a file, but show several surrounding lines?
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4647
For BSD or GNU grep you can use -B num to set how many lines before the match and -A num for ...
How do I properly compare strings in C?
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Jonathan Leffler
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answered Nov 4 '11 at 2:24
MysticialM...
2015互联网结束补贴战 从相杀到相爱只需一个长假 - 资讯 - 清泛网 - 专注C/...
...用一封内部邮件的方式向外界正式确认了合并的消息。
4月17日，58同城CEO姚劲波确认了58同城和赶集网的合并消息。10月底，携程与去哪儿的合并同样是以这样的路数上演。
不过滴滴和快的的合并是个例外。虽然在此前有合并...
What's the difference between a word and byte?
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14 Answers
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How do I view 'git diff' output with my preferred diff tool/ viewer?
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VonCVonC
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How to create circle with Bézier curves?
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141
As already said: there is no exact representation of the circle using Bezier curves.
To compl...
How to go back (ctrl+z) in vi/vim
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edited Aug 15 '17 at 10:43
Andrii Omelchenko
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a...