LSRC Name Picker

ruby-talk
1

Hey all.
I seem to get this error whenever I run my program.

-----------------------------------------------------------|
ERROR
-----------------------------------------------------------|
namePicker-cli.rb:58: syntax error, unexpected '{', expecting kEND
       @names { |f| lines = f.readlines
                          ^
namePicker-cli.rb:60: syntax error, unexpected '}', expecting kEND
-----------------------------------------------------------|
What does this mean? Here is my code:

-----------------------------------------------------------|
CODE
-----------------------------------------------------------|

···

###########################################
# Tally ho, I'm going to write this
# as best I can. Store the picked names
# to a file, and then that will be the checker.
###########################################

require 'ftools'
require 'rubygems'
require 'commandline/optionparser'
include CommandLine

##############################
# Set us up for CL options
##############################
od = OptionParser.new { |o|
   o << Option.new(:flag,
                   :names => %w[--help -h],
                   :opt_description => "Prints this page."
                   )
   o << Option.new(:names => %w[--file -f],
                   :arg_arity => [1,1],
                   :arg_description => "file",
                   :opt_found => OptionParser::GET_ARGS
                   )
}

op = od.parse

######################
# Set up some rules
######################
if op['--help']
   puts od
   exit()
end

#################
# Variables...
#################
FILE = op['--file']

#####################
# NamePicker Class
#####################
class NamePicker

   def initialize
     # names = open(FILE)
     File.syscopy(FILE, '.names.txt')
     @names = open('.names.txt', 'w+')
   end

   def random
     selected = nil
     @names.inject { |choice, line| selected < 1/quiz.lineno.to_f ? line : choice }
     if selected
       puts selected.chomp
       @names { |f| lines = f.readlines ### LINE 58
         lines.puts unless $. == selected.chomp
       } ### LINE 60
       self.rewind
     end

   end
end

randomName = NamePicker.new
randomName.random
#end

Suggestions? Any?
~ Ari
English is like a pseudo-random number generator - there are a bajillion rules to it, but nobody cares.

2

Hey all.
I seem to get this error whenever I run my program.

-----------------------------------------------------------|
ERROR
-----------------------------------------------------------|
namePicker-cli.rb:58: syntax error, unexpected '{', expecting kEND
      @names { |f| lines = f.readlines
                         ^
namePicker-cli.rb:60: syntax error, unexpected '}', expecting kEND
-----------------------------------------------------------|
What does this mean? Here is my code:

snip

      @names { |f| lines = f.readlines ### LINE 58
        lines.puts unless $. == selected.chomp
      } ### LINE 60

Untested, but shouldn't this be

     @names.each{ |f| lines = f.readlines ### LINE 58
         lines.puts unless $. == selected.chomp
     }

Alex Gutteridge

Bioinformatics Center
Kyoto University

···

On 3 Jul 2007, at 16:07, Ari Brown wrote:

3

It's Ruby's way of telling you that your code doesn't make sense.

Basically, you are defining a block for an instance variable here, but only methods can take blocks in Ruby. I assume you meant to call some iterator and forgot to include the method name.

Hope that helps.

James Edward Gray II

···

On Jul 3, 2007, at 2:07 AM, Ari Brown wrote:

I seem to get this error whenever I run my program.

-----------------------------------------------------------|
ERROR
-----------------------------------------------------------|
namePicker-cli.rb:58: syntax error, unexpected '{', expecting kEND
      @names { |f| lines = f.readlines
                         ^
namePicker-cli.rb:60: syntax error, unexpected '}', expecting kEND
-----------------------------------------------------------|
What does this mean?

4

<snip>

It's Ruby's way of telling you that your code doesn't make sense.

Basically, you are defining a block for an instance variable here, but only methods can take blocks in Ruby. I assume you meant to call some iterator and forgot to include the method name.

I was trying this:
  @names = open('.names.txt', 'w+')
in initialize, and then write to that file later on. Is there a better way to do this?

Hope that helps.

It did!

James Edward Gray II

Ari
--------------------------------------------|
If you're not living on the edge,
then you're just wasting space.

···

On Jul 3, 2007, at 8:55 AM, James Edward Gray II wrote:

5

This is fine and in that case you don't need the block at all. You can just write to the file with:

   @names.puts "…"

James Edward Gray II

···

On Jul 3, 2007, at 8:00 AM, Ari Brown wrote:

On Jul 3, 2007, at 8:55 AM, James Edward Gray II wrote:
<snip>

It's Ruby's way of telling you that your code doesn't make sense.

Basically, you are defining a block for an instance variable here, but only methods can take blocks in Ruby. I assume you meant to call some iterator and forgot to include the method name.

I was trying this:
  @names = open('.names.txt', 'w+')
in initialize, and then write to that file later on. Is there a better way to do this?