ruby vs shell

take_n.rb

puts "2.10.3".split(".")[0..1].join(".")

take_n.sh

if [[ -n "${ZSH_VERSION:-}" ]]
then __array_start=1
else __array_start=0
fi
__rvm_take_n()
{
  typeset IFS __temp_counter
  typeset -a __temp_arr1 __temp_arr2
  IFS=$3
  if [[ -n "${ZSH_VERSION:-}" ]]
  then eval "__temp_arr1=( \${=$1} )"
  else eval "__temp_arr1=( \$$1 )"
  fi
  __temp_counter=0
  __temp_arr2=()
  while (( __temp_counter < $2 ))
  do __temp_arr2+=( "${__temp_arr1[__array_start+__temp_counter++]}" )
  done
  eval "$1=\"\${__temp_arr2[*]}\""
}
var1=2.10.3
__rvm_take_n var1 2 .
echo $var1