In Ruby, you can convert an array of numeric strings to an array of integers by calling the String#to_i
method on each element using Array#map
, for example, like so:
arr = ["5", "-7", "1", "-2"] new_arr = arr.map { | item | item.to_i } print new_arr #=> [5, -7, 1, -2]
You could also shorten this by using the &:
syntax, for example, like so:
arr = ["5", "-7", "1", "-2"] new_arr = arr.map(&:to_i) print new_arr #=> [5, -7, 1, -2]
Using either of the above would create a new array with all numeric strings in the array converted to integer. If you want to mutate the original array instead, then you simply need to use Array#map!
instead of Array#map
. For example:
arr = ["5", "-7", "1", "-2"] arr.map!(&:to_i) print arr #=> [5, -7, 1, -2]
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