Robert Klemme
6/28/2007 9:23:00 PM
On 28.06.2007 15:42, John Joyce wrote:
>
> On Jun 28, 2007, at 8:26 AM, Ronald Fischer wrote:
>
>>>> require 'pp'
>>>> ....
>>>> result=foo(bar)
>>>> $my_message="The function call foo("+
>>>> bar.pretty_print_inspect+
>>>> ") returned: "+result.pretty_print_inspect
>>>>
>>>> This works well most of the time, for example if the values
>>> formatted
>>>> with pretty_print_inspect are arrays or numbers. I get, however, a
>>>> runtime error when calling for String:
>>>>
>>>> "abc".pretty_print_inspect
>>>> RuntimeError: pretty_print is not overridden for String
>>>>
>>>> Is there a different way to use the module pp, so that its
>>> output goes
>>>> to a string?
>>> irb(main):009:0> puts "foo\"bar".pretty_inspect
>>> "foo\"bar"
>>> => nil
>>
>> Thanks a lot! Nearly perfect!! (Actually, I use pretty_inspect.chomp,
>> because pretty_inspect adds a \n to the formatted string).
>>
>> Ronald
>>
> Actually, puts is adding that \n to the string, but your result is what
> you wanted!
No, #pretty_inspect actually adds it:
irb(main):001:0> "a".pretty_inspect
=> "\"a\"\n"
Ronald, #pretty_inspect can actually add newlines itself:
irb(main):004:0> ha=(1..10).inject({}) {|h,i| h[i] = Array.new(i, i); h}
=> {5=>[5, 5, 5, 5, 5], 6=>[6, 6, 6, 6, 6, 6], 1=>[1], 7=>[7, 7, 7, 7,
7, 7, 7], 2=>[2, 2], 8=>[8, 8, 8, 8, 8, 8, 8, 8],
3=>[3, 3, 3], 9=>[9, 9, 9, 9, 9, 9, 9, 9, 9], 4=>[4, 4, 4, 4],
10=>[10, 10, 10, 10, 10, 10, 10, 10, 10, 10]}
irb(main):005:0> ha.pretty_inspect
=> "{5=>[5, 5, 5, 5, 5],\n 6=>[6, 6, 6, 6, 6, 6],\n 1=>[1],\n 7=>[7, 7,
7, 7, 7, 7, 7],\n 2=>[2, 2],\n 8=>[8, 8, 8, 8, 8
, 8, 8, 8],\n 3=>[3, 3, 3],\n 9=>[9, 9, 9, 9, 9, 9, 9, 9, 9],\n 4=>[4,
4, 4, 4],\n 10=>[10, 10, 10, 10, 10, 10, 10, 10,
10, 10]}\n"
irb(main):006:0> puts ha.pretty_inspect
{5=>[5, 5, 5, 5, 5],
6=>[6, 6, 6, 6, 6, 6],
1=>[1],
7=>[7, 7, 7, 7, 7, 7, 7],
2=>[2, 2],
8=>[8, 8, 8, 8, 8, 8, 8, 8],
3=>[3, 3, 3],
9=>[9, 9, 9, 9, 9, 9, 9, 9, 9],
4=>[4, 4, 4, 4],
10=>[10, 10, 10, 10, 10, 10, 10, 10, 10, 10]}
=> nil
irb(main):007:0>
Kind regards
robert