Hello everyone!
I'm trying to make a little grocery list to practice. My intention is to
make basically an array that you can add to, remove and display items.
My problem starts when after a person adds an item to the array for
example and the options come up again, instead of going back into the
cases the program just quits.
It kinda is like a loop where it keeps going around and around.. my
program just doesn't wanna do that.
Could someone explain where I went wrong with my codes?
list = Array.new(0)
display_proc = Proc.new {|x| puts x}
puts "What would you like to do with your shopping list?"
Hello everyone!
I'm trying to make a little grocery list to practice. My intention is to
make basically an array that you can add to, remove and display items.
My problem starts when after a person adds an item to the array for
example and the options come up again, instead of going back into the
cases the program just quits.
It kinda is like a loop where it keeps going around and around.. my
program just doesn't wanna do that.
Could someone explain where I went wrong with my codes?
list = Array.new(0)
display_proc = Proc.new {|x| puts x}
puts "What would you like to do with your shopping list?"
case @options
when "add"
puts "What item would you like to add?"
add = gets.chomp
list << add unless list.include?(add)
This line should go away, similarly as all other invocations inside the case:
opening_options
when "remove"
puts "What item would you like to remove?"
list.each(&display_proc)
remove = gets.chomp
list.delete(remove)
opening_options
when "clear"
puts "Are you sure you want to delete every item from your list?"
puts "--YES/NO"
clear = gets.chomp.downcase
case clear
when "yes" || "y"
list.delete_if {true}
opening_options
when "no" || "n"
opening_options
else "ERROR! Unknown command!"
end
when "display"
list.each(&display_proc)
opening_options
when "exit"
system('quit')
This won't work. You want to invoke "exit" instead of "system".
else "ERROR! Unknown command!"
end
... ending here.
Kind regards
robert
路路路
On Thu, Nov 7, 2013 at 6:07 PM, Greg Hajdu <lists@ruby-forum.com> wrote:
Hello everyone!
I'm trying to make a little grocery list to practice. My intention is to
make basically an array that you can add to, remove and display items.
My problem starts when after a person adds an item to the array for
example and the options come up again, instead of going back into the
cases the program just quits.
It kinda is like a loop where it keeps going around and around.. my
program just doesn't wanna do that.
Could someone explain where I went wrong with my codes?
list = Array.new(0)
display_proc = Proc.new {|x| puts x}
puts "What would you like to do with your shopping list?"
case @options
when "add"
puts "What item would you like to add?"
add = gets.chomp
list << add unless list.include?(add)
This line should go away, similarly as all other invocations inside the case:
opening_options
when "remove"
puts "What item would you like to remove?"
list.each(&display_proc)
remove = gets.chomp
list.delete(remove)
opening_options
when "clear"
puts "Are you sure you want to delete every item from your list?"
puts "--YES/NO"
clear = gets.chomp.downcase
case clear
when "yes" || "y"
when "yes", "y"
路路路
On Nov 7, 2013, at 9:18, Robert Klemme <shortcutter@googlemail.com> wrote:
On Thu, Nov 7, 2013 at 6:07 PM, Greg Hajdu <lists@ruby-forum.com> wrote:
list.delete_if {true}
opening_options
when "no" || "n"
opening_options
else "ERROR! Unknown command!"
end
when "display"
list.each(&display_proc)
opening_options
when "exit"
system('quit')
This won't work. You want to invoke "exit" instead of "system".
