Hi,

Xeno Campanoli a ñÄrit :
> I can't figure out Rescue.  I have the following:
> 
>    rescue SystemCallError
>      print "parse failed on #{line}" + $!
>      raise
>    end
> 
> and it doesn't compile:
> 
> /validateMenuSpecs.rb:135: syntax error
>                        rescue SystemCallError
>                              ^
> ./validateMenuSpecs.rb:135: warning: useless use of a constant in void 
> context
> ./validateMenuSpecs.rb:173: syntax error
> 

You must have a context has the warning message tells you. So you must 
have something like

begin
   # do something here
rescue SystemCallError
   print "parse failed on #{ line}" + $!
   raise
end

You should then put the code that you expect to get an exception from 
after the begin clause.

HTH

Ghislain