PP
Since Ruby 2.5, this library is required by default
A pretty-printer for Ruby objects.
What PP Does
Standard output by #p returns this:
#<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 returns this:
#<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> Usage
pp(obj) #=> obj pp obj #=> obj pp(obj1, obj2, ...) #=> [obj1, obj2, ...] pp() #=> nil Output obj(s) to $> in pretty printed format.
It returns obj(s).
Output Customization
To define a customized pretty printing function for your classes, redefine method #pretty_print(pp) in the class.
#pretty_print takes the pp argument, which is an instance of the PP class. The method uses #text, #breakable, #nest, #group and #pp to print the object.
