Maintenance of Ruby 2.0.0 ended on February 24, 2016. Read more
PrettyPrint
non-pretty-printed output by p is:
#<PP:0x81fedf0 @genspace=#<Proc:0x81feda0>, @group_queue=#<PrettyPrint::GroupQueue:0x81fed3c @queue=[[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], []]>, @buffer=[], @newline="\n", @group_stack=[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], @buffer_width=0, @indent=0, @maxwidth=79, @output_width=2, @output=#<IO:0x8114ee4>>
pretty-printed output by pp is:
#<PP:0x81fedf0 @buffer=[], @buffer_width=0, @genspace=#<Proc:0x81feda0>, @group_queue= #<PrettyPrint::GroupQueue:0x81fed3c @queue= [[#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>], []]>, @group_stack= [#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>], @indent=0, @maxwidth=79, @newline="\n", @output=#<IO:0x8114ee4>, @output_width=2>
I like the latter. If you do too, this library is for you.
pp(obj) #=> obj pp(obj1, obj2, ...) #=> [obj1, obj2, ...] pp() #=> nil
output +obj(s)+ to +$>+ in pretty printed format.
It returns +obj(s)+.
To define your customized pretty printing function for your classes,
redefine a method pretty_print(pp
) in the class. It takes an
argument pp
which is an instance of the class PP. The method should use PP#text, PP#breakable,
PP#nest, PP#group and PP::PPMethods#pp to print the
object.
Tanaka Akira <akr@m17n.org>
Outputs obj
to out
in pretty printed format of
width
columns in width.
If out
is omitted, +$>+ is assumed. If width
is omitted, 79 is assumed.
::pp returns out
.
# File pp.rb, line 76 def PP.pp(obj, out=$>, width=79) q = PP.new(out, width) q.guard_inspect_key {q.pp obj} q.flush #$pp = q out << "\n" end
Outputs obj
to out
like ::pp but with no indent and newline.
::singleline_pp returns
out
.
# File pp.rb, line 88 def PP.singleline_pp(obj, out=$>) q = SingleLine.new(out) q.guard_inspect_key {q.pp obj} q.flush out end