GetoptLong usage

Hi,

I’m using Example: http://rubylearning.com/satishtalim/ruby_arrays.html
as a guide to GetoptLong usage. I get the message:

uninitialized constant GetoptLong::OptionalArgument (NameError)

for line 10 of the program listed below (with line 10 flagged). Can
anyone point me to a working example of GetoptsLong usage?

Thanks in Advance,
Richard

SummarizeBalances.rb

K:_Projects\Ruby_Ruby_Apps\InvestmentSW

Example: http://rubylearning.com/satishtalim/ruby_arrays.html

require ‘GetoptLong’

puts "Args = " + ARGV.join(", ")

opts = GetoptLong.new(

[ “–from”, “-f”, GetoptLong::OptionalArgument], # Line 10
[ “–to”, “-t”, GetoptLong::OptionalArgument],
[ “–weeks_until”, “-w”, GetoptLong::OptionalArgument]
)

# Process the arguments
opts.each { |opt, arg|

puts %{%s => “%s”} % [opt, arg]
}
rem_args = ARGV.join(", ")
puts “Remaining args = %s” % [rem_args] if rem_args

On Thursday 30 September 2010, RichardOnRails wrote:

|Thanks in Advance,
| opts = GetoptLong.new(
| puts “Remaining args = %s” % [rem_args] if rem_args
As you can see from the link you posted, the constant name is
GetoptLong::OPTIONAL_ARGUMENT, not GetoptLong::OptionalArgument.
However, I’d
consider using OptionParser (which, like GetoptLong is included in the
ruby
standard library) rather than GetoptLong, since it provides a much more
ruby-
oriented interface.

Stefano

On Sep 30, 10:38 am, Stefano C. [email protected] wrote:

|
|require ‘GetoptLong’
| opts.each { |opt, arg|

Stefano

Hi Stefano,

Excellent response.

As you can see …
Admittedly, I did see the syntax in the example. What I didn’t see,
alas, was the precise option I wanted to use. By time I clicked my
SciTE editor, thus overlaying the example, I forgot the syntax.
Remembering the words was all I could muster. Sad tale :slight_smile:

OptionParser
Looks good, especially the comprehensive example.

Best wishes,
Richard

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