大约有 47,000 项符合查询结果（耗时：0.0546秒） [XML]
How to count certain elements in array?
... Thor JacobsenThor Jacobsen
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Android Studio needs JDK 7 for Android-L mac
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answered Jun 29 '14 at 12:03
megapoffmegapoff
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How to exclude this / current / dot folder from find “type d”
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answered Jun 30 '13 at 10:32
Ciro Santilli 郝海东冠状病六四事件法轮功Ciro Santilli 郝海东冠状病六四事件法轮功
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schema builder laravel migrations unique on two columns
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IntelliJ IDEA: Running a shell script as a Run/Debug Configuration
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Anton Dozortsev
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answered Mar 4 '13 at 15:54
Sundar AnnamalaiSundar...
Scala: List[Future] to Future[List] disregarding failed futures
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Serhii Yakovenko
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answered Jan 1 '14 at 23:35
Kevin WrightKevin Wright
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Performance - Date.now() vs Date.getTime()
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edited Oct 29 '13 at 19:28
kevinji
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Pass a data.frame column name to a function
... just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function(x, colu...
Unable to modify ArrayAdapter in ListView: UnsupportedOperationException
... Shamim Ahmmed
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answered Jul 8 '10 at 4:15
st0lest0le
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Generate a Hash from string in Javascript
... hash = ((hash << 5) - hash) + chr;
hash |= 0; // Convert to 32bit integer
}
return hash;
}
});
Source:
http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
sh...