How to loop through a list in R

Question

I have a list lets say:

dataSet$mixed_bag <- list("Hello", c("USA", "Red", "100"), c("India", "Blue", "76")) 

I want to iterate through this list and create new variables based on the contents of the list. A pseudo code would look something like this.

foreach row in dataSet$mixed_bag {     if (sapply(dataSet$mixed_bag, length) == 3) {         dataSet$country <- dataSet$mixed_bag[[row]][1];         dataSet$color <- dataSet$mixed_bag[[row]][2];         dataSet$score <- dataSet$mixed_bag[[row]][3];     } else if (sapply(dataSet$mixed_bag, length) == 2) {        #Do something else     } else {        # Do nothing     } } 

Please suggest how would I do this in R

Answer 1

something like this?

dataList <- list("Hello", c("USA", "Red", "100"), c("India", "Blue", "76")) for(i in dataList)   {print(i)} 

returns:

[1] "Hello" [1] "USA" "Red" "100" [1] "India" "Blue"  "76"    

or:

for(i in dataList)   {   for(j in i)   {print(j)}   } 

returns:

[1] "Hello" [1] "USA" [1] "Red" [1] "100" [1] "India" [1] "Blue" [1] "76"