Re: Random output in LilyPond Log

[Freeman Gilmore]

On Thu, Jul 12, 2018 at 4:54 PM, Urs Liska <address@hidden> wrote:

Hi Freeman,

I'm not completely sure about the internals but #(display) procduces its output in some unpredictable manner. Sometimes, when you (display) some very large structures it may be totally interrupted by other output (at least in Frescobaldi).

When you want more reliable output (especially if you want to follow the order of operations) you could rather use

mylist = #(list 'red random 12)
#(ly:message "My list: ~a" mylist)

Good luck
Urs

Am 12.07.2018 um 20:17 schrieb Freeman Gilmore:

I am using Frescobaldi and studying the Scheme Book.    When I compile,

mylist = #( list 'red  random 12 )
#(display mylist)

I get two different results in the LilyPond Log, see below.    The line, 

(red #<primitive-procedure random> 12)

changes  positions randomly when compile.   Would someone explain?

Thank you, ƒg

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Starting lilypond-windows.exe 2.19.81 [Untitled]...

Processing `c:/users/free/appdata/local/temp/frescobaldi-1jampp/tmpzk5nkr/document.ly'

Parsing...

(red #<primitive-procedure random> 12)

c:/users/free/appdata/local/temp/frescobaldi-1jampp/tmpzk5nkr/document.ly:1: warning: no \version statement found, please add

\version "2.19.81"

for future compatibility

Success: compilation successfully completed

Completed successfully in 0.9".

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Starting lilypond-windows.exe 2.19.81 [Untitled]...

Processing `c:/users/free/appdata/local/temp/frescobaldi-1jampp/tmpzk5nkr/document.ly'

Parsing...

c:/users/free/appdata/local/temp/frescobaldi-1jampp/tmpzk5nkr/document.ly:1: warning: no \version statement found, please add

\version "2.19.81"

for future compatibility

(red #<primitive-procedure random> 12)

Success: compilation successfully completed

Completed successfully in 0.7".

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​Thank you Urs, to make it clear just use simple numbers it dos the same:

mylist = #( list  6 12 )
#(display mylist)​