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Swift Bridging Header import issue
...roblem:
1. Delete all your bridging files that you created until now.
2. Select the main folder of project and hit new file->iOS->Header file.
3. Write your imports in the header file created.
4. Select the project inside Xcode->Build Settings, type in search field: bridging and put in ...
Alternate output format for psql
...e a table with columns c1 through cN . The columns are wide enough that selecting all columns causes a row of query results to wrap multiple times. Consequently, the output is hard to read.
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How to uncheck a radio button?
...nt need the each function; you could just chain the removeAttr call to the selector.
– cjstehno
Jan 22 '10 at 13:55
6
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Undo git pull, how to bring repos to old state
...unning "gitk --all from your git command line"), it's simple. Just run it, select the commit you want to rollback to (right-click), and select "Reset master branch to here". If you have no uncommited changes, chose the "hard" option.
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Pass a data.frame column name to a function
...(x[,column])
}
fun1(df, "B", max)
Alternatively, using [[ also works for selecting a single column at a time:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[[column]])
}
fun1(df, "B")
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How can I delete all unversioned/ignored files/folders in my working copy?
...ovides a finer grain resolution than Stefan's answer provided, letting you select non-versioned files separately from ignored files. Just select TortoiseSvn >> Clean up... to open this dialog.
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Trimming a huge (3.5 GB) csv file to read into R
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My try with readLines. This piece of a code creates csv with selected years.
file_in <- file("in.csv","r")
file_out <- file("out.csv","a")
x <- readLines(file_in, n=1)
writeLines(x, file_out) # copy headers
B <- 300000 # depends how large is one pack
while(length(x)) {
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Is it a good practice to use try-except-else in Python?
...ntrol."
In the Python world, using exceptions for flow control is common and normal.
Even the Python core developers use exceptions for flow-control and that style is heavily baked into the language (i.e. the iterator protocol uses StopIteration to signal loop termination).
In addition, the try...
Cannot open backup device. Operating System error 5
...
Go to the SQL server folder in start menu and click configuration tools
Select SQL Server configuration manager
On SQL server services, on the desired instance change the (Log On as) to local system
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Split output of command by columns using Bash?
...d> | while read a b; do echo $a; done
The first parameter to read, a, selects the first column, and if there is more, everything else will be put in b. As a result, you never need more variables than the number of your column +1.
So,
while read a b c d; do echo $c; done
will then output th...