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R programming: How do I get Euler's number?
For example, how would I go about entering the value e^2 in R?
3 Answers
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git working on two branches simultaneously
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Git 2.5+ (Q2 2015) supports this feature!
If you have a git repo cool-app, cd to root (cd cool-app), run git worktree add ../cool-app-feature-A feature/A. This checks out the branch feature/A in it's own new dedicated directory,...
“Order by Col1, Col2” using entity framework
I need to order by 2 columns using the entity framework.
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How do I remove leading whitespace in Python?
I have a text string that starts with a number of spaces, varying between 2 & 4.
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The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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arrayfun can be significantly slower than an explicit loop in matlab. Why?
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Rails ActionMailer - format sender and recipient name/email address
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If you are taking user input for name and email, then unless you very carefully validate or es...
Vim: How to change the highlight color for search hits and quickfix selection
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Look at $VIMRUNTIME/colors/desert.vim. Color mappings are defined there with the hi[ghlight] co...
Specify custom Date format for colClasses argument in read.table/read.csv
..., function(from) as.Date(from, format="%d/%m/%Y") )
tmp <- c("1, 15/08/2008", "2, 23/05/2010")
con <- textConnection(tmp)
tmp2 <- read.csv(con, colClasses=c('numeric','myDate'), header=FALSE)
str(tmp2)
Then modify if needed to work for your data.
Edit ---
You might want to run setClas...
View a file in a different Git branch without changing branches
...fic revision in Git?
How to get just one file from another branch
UPDATE 2015-01-19:
Nowadays you can use relative paths with git show a1b35:./file.txt.
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