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Grouping functions (tapply, by, aggregate) and the *apply family
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$b
[1] 3
$c
[1] 91
lapply(x, FUN = sum)
$a
[1] 1
$b
[1] 6
$c
[1] 5005
sapply - When you want to apply a function to each element of a
list in turn, but you want a vector back, rather than a list.
If you find yourself typing unlist(lapply(...)), stop and consider
sapply.
x <- list(a =...
Bundle ID Suffix? What is it?
... a period (.) — an App ID Prefix (your Team ID by default, e.g. ABCDE12345), and an App ID Suffix (a Bundle ID search string, e.g. com.mycompany.appname). [emphasis added]
So in this case the suffix is the full string com.awesomeapps.thebestapp.
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Adding List.add() another list
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275
List<T>.Add adds a single element. Instead, use List<T>.AddRange to add multiple va...
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, c...
Default html form focus without JavaScript
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5 Answers
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Create module variables in Ruby
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159
Ruby natively supports class variables in modules, so you can use class variables directly, and...
How to import module when module name has a '-' dash or hyphen in it?
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5 Answers
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Active
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“Wrong type argument: commandp” error when binding a lambda to a key
I am getting a "Wrong type argument: commandp, (lambda nil (forward-line 5))" here.
3 Answers
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Autowiring two beans implementing same interface - how to set default bean to autowire?
I have a Spring 2.5/Java/Tomcat application. There is the following bean, which is used throughout the application in many places
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