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Truncate a List

leto over 4 years ago

Hello All,

I have a list with a certain length.

I need to truncate it to make is a shorter list.

Is there a function that can do this most efficiently?

If not, any suggestion on the most efficient way to do this?

Thanks All.

Parents

DavidJHutchins over 4 years ago

try calling cdr() twice to remove the first 2 entries

D:\Temp>il_allegro
> testdata = list( "a" "z" "q" "w" "s")
("a" "z" "q" "w" "s")
> length(testdata)
5
> newdata=cdr(cdr(testdata))
("q" "w" "s")
> length(newdata)
3
> exit

D:\Temp>
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DavidJHutchins over 4 years ago

try calling cdr() twice to remove the first 2 entries

D:\Temp>il_allegro
> testdata = list( "a" "z" "q" "w" "s")
("a" "z" "q" "w" "s")
> length(testdata)
5
> newdata=cdr(cdr(testdata))
("q" "w" "s")
> length(newdata)
3
> exit

D:\Temp>
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