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Converting string to numeric [duplicate]
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132
I suspect you are having a problem with factors. For example,
> x = factor(4:8)
> x
[1]...
What is the difference between indexOf() and search()?
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sshow
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answered Dec 9 '08 at 20:29
ng.mangineng.mangine
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How do I print the type of a variable in Rust?
...e, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
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2 | let mut my_number: () = 32.90;
| ^^^^^ expected (), found floating-point number
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= ...
Error 5 : Access Denied when starting windows service
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31 Answers
31
Active
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How to insert a character in a string at a certain position?
...t was suggested to use String for a better display output (instead of 1234.5 will be 1234.50 ). Therefore, I need a function that will take an int as parameter and return the properly formatted String with a decimal point 2 digits from the end.
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How do I get list of all tables in a database using TSQL?
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edited Apr 23 at 20:18
NTDLS
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answe...
How to count TRUE values in a logical vector
...m(z) # gives you NA
table(z)["TRUE"] # gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm = TRUE) # best way to count TRUE values
(which gives 1). I think that table solution is less effici...
How to make --no-ri --no-rdoc the default for gem install?
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1230
You just add the following line to your local ~/.gemrc file (it is in your home folder):
gem: ...
Custom UITableViewCell from nib in Swift
...troller: UITableViewController {
let items = ["Item 1", "Item2", "Item3", "Item4"]
override func viewDidLoad() {
super.viewDidLoad()
tableView.register(UINib(nibName: "CustomCell", bundle: nil), forCellReuseIdentifier: "CustomCell")
}
// MARK: - UITableViewDataSour...
How to get record created today by rails activerecord?
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edited Apr 3 '18 at 21:17
answered May 27 '10 at 9:02
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