大约有 39,468 项符合查询结果（耗时：0.0382秒） [XML]
How do you take a git diff file, and apply it to a local branch that is a copy of the same repositor
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answered Sep 7 '12 at 15:17
PhilippPhilipp
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How to trigger jQuery change event in code
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John HartsockJohn Hartsock
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How to list records with date from the last 10 days?
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edited Sep 12 '18 at 12:36
IanS
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ans...
Is there StartsWith or Contains in t sql with variables?
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123
StartsWith
a) left(@edition, 15) = 'Express Edition'
b) charindex('Express Edition', @edition...
jQuery Event Keypress: Which key was pressed?
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Wolph
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answered Nov 19 '08 at 15:07
Eran GalperinEran Galperin
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How to hash some string with sha256 in Java?
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edited Mar 12 '18 at 13:28
Kasun Siyambalapitiya
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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...
Logger slf4j advantages of formatting with {} instead of string concatenation
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answered May 11 '12 at 16:49
skaffmanskaffman
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What is the meaning of the prefix N in T-SQL statements and when should I use it?
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edited May 23 '17 at 12:10
Community♦
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answered Apr 5 '12 at 8:20
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What's the difference of strings within single or double quotes in groovy?
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answered Jul 20 '11 at 12:03
tim_yatestim_yates
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