Verbosity of p

ruby-talk
1

hello

why does:
puts "Inspect:#{p(myDog)}"

give LESS verbose results than:

p(myDog)

?

is it that p returns an array, and puts only prints the first element of
arrays?

thanks

···

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Posted via http://www.ruby-forum.com/.

2

"p x" is a shorthand for "puts x.inspect", i.e. it actually does the printing. The "inspect" method is what actually returns a "verbose" string. I suspect the intent of your first statement was:

   puts "Inspect:#{myDog.inspect}"

If you call p during a string interpolation, you can expect the output to appear before the whole strong you've asked it to print, which is probably not what you wanted.

···

On 05/12/10 02:55, Johny Why wrote:

hello

why does:
puts "Inspect:#{p(myDog)}"

give LESS verbose results than:

p(myDog)

?

is it that p returns an array, and puts only prints the first element of
arrays?

--
Matthew

3

The method #p is meant to be used as a replacement for:

  puts obj.inspect

It outputs itself, so you don't want to interpolate its output like
you're doing above. Try this:

  print "Inspect: "
  puts myDog.inspect

... vs ...

  print "p: "
  p myDog

Ben

···

On Sat, Dec 4, 2010 at 6:55 PM, Johny Why <johnywhy@gmail.com> wrote:

why does:
puts "Inspect:#{p(myDog)}"

give LESS verbose results than:

p(myDog)