大约有 41,000 项符合查询结果（耗时：0.0624秒） [XML]
How can I reference a commit in an issue comment on GitHub?
...
612
To reference a commit, simply write its SHA-hash, and it'll automatically get turned into a lin...
How do I remove the border around a focused contenteditable pre?
...
|
edited Jan 12 '17 at 7:46
answered Feb 14 '10 at 10:49
...
Pull remote branch into local repo with different name?
...
answered Aug 20 '12 at 18:45
KingCrunchKingCrunch
115k1818 gold badges141141 silver badges164164 bronze badges
...
Pass a data.frame column name to a function
...ust 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, column...
how to convert a string to date in mysql?
...
STR_TO_DATE('12/31/2011', '%m/%d/%Y')
share
|
improve this answer
|
follow
|
...
Do SVG docs support custom data- attributes?
...in XML attributes whose names start with data- such as <p data-myid="123456"> . Is this part of the SVG spec too?
...
Why do Objective-C files use the .m extension?
...
|
edited May 12 '14 at 15:15
nhubbard
10022 silver badges99 bronze badges
answered Mar 16 '...
Weird “[]” after Java method signature
... |
edited Jan 15 '11 at 12:29
answered Jan 15 '11 at 11:33
...
Current executing procedure name
...
Still valid on SQL Serve 2012
– Pimenta
May 6 '16 at 10:57
2
...
Access “this” from Java anonymous class
...
|
edited May 14 '12 at 1:28
Eng.Fouad
103k6161 gold badges286286 silver badges383383 bronze badges
...