Hi,
may be my Enigma hacking has encyphered my brain also...but...
What is wrong with this code:
etwdata=[[1,2],[3,4],[5,6]] # only example data
etwdata.each{ |rot|
rot.each{ |val|
print (val + ?A).chr," " # here ruby fails...error message below...
}
print "\n"
Ruby's error message:
basicenigma4.rb:175: warning: don't put space before argument parentheses
Sorry... but _I_ dont see anything wrong here...
Ruby.use!
Meino
Meino Christian Cramer wrote:
Hi,
may be my Enigma hacking has encyphered my brain also...but...
What is wrong with this code:
etwdata=[[1,2],[3,4],[5,6]] # only example data
etwdata.each{ |rot|
rot.each{ |val|
print (val + ?A).chr," " # here ruby fails...error message below...
}
print "\n"Ruby's error message:
basicenigma4.rb:175: warning: don't put space before argument parentheses
Sorry... but _I_ dont see anything wrong here...
didn't read it all, but imho ruby wants to read:
print(val + ?A).chr," "
but you want to write:
print((val + ?A).chr," ")
or sth like that. put explicit brackets in that case.
emmanuel
Meino Christian Cramer wrote:
Hi,
may be my Enigma hacking has encyphered my brain also...but...
What is wrong with this code:
etwdata=[[1,2],[3,4],[5,6]] # only example data
etwdata.each{ |rot|
rot.each{ |val|
You wrote:
print (val + ?A).chr," " #...
Try this:
print( (val + ?A).chr, " " )
}
print "\n"
And adding a 2nd '}' might help, too. 
Ruby's error message:
basicenigma4.rb:175: warning: don't put space before argument parentheses
The script didn't fail, it only gave you a warning.
For non-tivial combinations of method calls adding parentheseses is recommended, because otherwise it may be unclear what the result should be.
Sorry... but _I_ dont see anything wrong here...
....because there *is* nothing wrong, just sub-optimal.
Happy rubying
Stephan
--
Stephan Kämper/IT-Beratung http://www.stephankaemper.de
Qualitätssicherung / Softwaretest / Datenanalyse
I think you need to be a wee bit more explicit about what you want to print.
What about something like this?
etwdata.each{ |rot|
rot.each{ |val|
print("%s\n" % [(val + ?A).chr])
}
}
----- Original Message -----
From: "Meino Christian Cramer" <Meino.Cramer@gmx.de>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Friday, August 20, 2004 10:18 AM
Subject: Got stuck...
Hi,
may be my Enigma hacking has encyphered my brain also...but...
What is wrong with this code:
etwdata=[[1,2],[3,4],[5,6]] # only example data
etwdata.each{ |rot|
rot.each{ |val|
print (val + ?A).chr," " # here ruby fails...error message
below...
}
print "\n"Ruby's error message:
basicenigma4.rb:175: warning: don't put space before argument parentheses
Sorry... but _I_ dont see anything wrong here...
Ruby.use!
Meino
Other people have pointed the error out, but it's worth noting that
print is actually a method of Kernel, not a keyword, hence the need for
parens surrounding the entire argument.
martin
Meino Christian Cramer <Meino.Cramer@gmx.de> wrote:
print (val + ?A).chr," " # here ruby fails...error message below...
basicenigma4.rb:175: warning: don't put space before argument parentheses
Meino Christian Cramer wrote:
print (val + ?A).chr," " # here ruby fails...error message below...
print(val + ?A).chr," "
moulon% ruby -e 'val = 32; print (val + ?A).chr," "'
a moulon%
Guy Decoux
Other people have pointed the error out, but it's worth noting that
print is actually a method of Kernel, not a keyword, hence the need for
parens surrounding the entire argument.
What error ?
svg% ruby -ve 'val = 32; print (val + ?A).chr," "'
ruby 1.8.2 (2004-07-29) [i686-linux]
-e:1: warning: (...) interpreted as grouped expression
a svg%
Guy Decoux
Well, the reason ruby was issuing a warning, at any rate 
martin
ts <decoux@moulon.inra.fr> wrote:
> Other people have pointed the error out, but it's worth noting that
> print is actually a method of Kernel, not a keyword, hence the need for
> parens surrounding the entire argument.What error ?
Well, the reason ruby was issuing a warning, at any rate
and you find this normal ?
vg% ruby -vce 'print (a + b)'
ruby 1.8.2 (2004-07-29) [i686-linux]
-e:1: warning: (...) interpreted as grouped expression
Syntax OK
svg%
svg% ruby -vce 'a { print (a + b) }'
ruby 1.8.2 (2004-07-29) [i686-linux]
-e:1: warning: don't put space before argument parentheses
Syntax OK
svg%
What is the next step ?
ruby will use a random generator to know if it must give the warning
"warning: (...) interpreted as grouped expression"
or
"warning: don't put space before argument parentheses"
:-)))
Guy Decoux
vg% ruby -vce 'print (a + b)'
ruby 1.8.2 (2004-07-29) [i686-linux]
-e:1: warning: (...) interpreted as grouped expression
Syntax OK
svg%svg% ruby -vce 'a { print (a + b) }'
ruby 1.8.2 (2004-07-29) [i686-linux]
-e:1: warning: don't put space before argument parentheses
Syntax OK
svg%
Wow - wasn't aware of that. What's the difference due to?
What is the next step ?
ruby will use a random generator to know if it must give the warning
"warning: (...) interpreted as grouped expression"
or
"warning: don't put space before argument parentheses"
But will it be a reentrant random number generator? (:
martin
ts <decoux@moulon.inra.fr> wrote: