Add usage output to STDOUT for playing script

bsodmike · Oct 6, 2015 · 366645e · 366645e
1 parent fb1ab2a
commit 366645e
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/koans/greed/play_greed.rb b/koans/greed/play_greed.rb
@@ -1,4 +1,14 @@
 #!/usr/bin/env ruby
 require File.expand_path(File.dirname(__FILE__) + "/lib/greed")
 
+if ARGV.empty?
+  STDOUT.puts <<-EOF
+Please provide player names
+
+Usage:
+  play_greed [NAMES]
+EOF
+  abort
+end
+
 Greed::Game.start_game(*ARGV)