To my knowledge they are identical. I think there maybe a few engines out there that don’t support the numbered syntax but I’m not sure which. I vaguely recall a question on SO a few days ago where explicit notation wouldn’t work in Notepad++. The only time I would use explicitly numbered repetition is when … Read more
Pretty self explanatory. repeat{ statements… if(condition){ break } } Or something like that I would think. To get the effect of the do while loop, simply check for your condition at the end of the group of statements.
You can use replicate or rep: replicate(2, “my_string”) # [1] “my_string” “my_string” rep(“my_string”, 2) # [1] “my_string” “my_string” paste will put it together: paste(replicate(2, “my_string”), collapse = “”) # [1] “my_stringmy_string”
You can use the concat function: In [13]: pd.concat([x]*5) Out[13]: a b 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 If you only want to repeat the values and not the index, you can do: In [14]: pd.concat([x]*5, ignore_index=True) Out[14]: a b 0 1 2 1 1 2 … Read more
When you repeat a capturing group, in most flavors, only the last capture is kept; any previous capture is overwritten. In some flavor, e.g. .NET, you can get all intermediate captures, but this is not the case with Javascript. That is, in Javascript, if you have a pattern with N capturing groups, you can only … Read more
You missed the each= argument to rep(): R> n <- 3 R> rep(1:5, each=n) [1] 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 R> so your example can be done with a simple R> rep(1:8, each=20)
df <- data.frame(a = 1:2, b = letters[1:2]) df[rep(seq_len(nrow(df)), each = 2), ]
var helloWorldTimer = NSTimer.scheduledTimerWithTimeInterval(60.0, target: self, selector: Selector(“sayHello”), userInfo: nil, repeats: true) func sayHello() { NSLog(“hello World”) } Remember to import Foundation. Swift 4: var helloWorldTimer = Timer.scheduledTimer(timeInterval: 60.0, target: self, selector: #selector(ViewController.sayHello), userInfo: nil, repeats: true) @objc func sayHello() { NSLog(“hello World”) }
The command to repeat an f is ; (semicolon); , (comma) reverses the direction of the search.
Jason Scheirer’s answer is correct but could use some more exposition. First off, to repeat a string an integer number of times, you can use overloaded multiplication: >>> ‘abc’ * 7 ‘abcabcabcabcabcabcabc’ So, to repeat a string until it’s at least as long as the length you want, you calculate the appropriate number of repeats … Read more