Parsing one-liners

ruby-talk
1

The problem:
  read in a string containing an arbitrary number of comma separated
numbers and convert it to an array of numbers.

It seems like this could be a one-liner, but the best I can get is two...

w=input_string.split(/,\s*/)
w.each_index {|n| w[n]=w[n].to_f}

Anyone know a one-liner for this?

_Kevin

2

w1=input_string.split(/,\s*/).map{|x| x.to_f}

3

If your numbers are *true* floats (for example 123.0 instead of 123),
then you could try this:

w = eval("[#{input_string}]")

Kevin Olbrich wrote:

···

The problem:
  read in a string containing an arbitrary number of comma separated
numbers and convert it to an array of numbers.

It seems like this could be a one-liner, but the best I can get is two...

w=input_string.split(/,\s*/)
w.each_index {|n| w[n]=w[n].to_f}

Anyone know a one-liner for this?

_Kevin

4

w = input_string.split(/,\s*/).map { |n| n.to_f }

Regs,
D

email55555@gmail.com wrote:

···

If your numbers are *true* floats (for example 123.0 instead of 123),
then you could try this:

w = eval("[#{input_string}]")

Kevin Olbrich wrote:

The problem:
read in a string containing an arbitrary number of comma separated
numbers and convert it to an array of numbers.

It seems like this could be a one-liner, but the best I can get is two...

w=input_string.split(/,\s*/)
w.each_index {|n| w[n]=w[n].to_f}

Anyone know a one-liner for this?

_Kevin

--
Derek Wyatt - C++ / Ruby / Unix Programmer