[R] repeating a dataframe n times in the direction of the rows

[Wolfram Fischer]

Question:
    How can a repeat a dataframe n times 
    in the direction of the rows?
    (Or: How I can rbind a dataframe n times ?)


Example Data:
    x <- data.frame( alpha=letters[1:3], num=1:3 )
    n <- 4


Complicated solution: To rbind a dataframe n times I can program a loop:

    xr <- x
    for( i in 2:n ) xr <- rbind( xr, n )


Observation: To cbind a dataframe n times I can use rep:

    xc <- data.frame( rep( x, n ) )


Is there a similar possibility to repeat in the direction of the rows?


Wolfram
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