Am 03.07.25 um 16:34 schrieb Wolfgang Schuster:

Am 03.07.2025 um 16:04 schrieb Henning Hraban Ramm:

...

Hi, I’m trying to get a simple function with a variable number of parameters working:

""" \startluacode interfaces.implement {    name      = "Autoren",    public    = true,    arguments = { "hash" },    actions   = function(t)      logs.report('Autoren', 'interface got table of length ' .. #t)    end } \stopluacode

\starttext

Info: \Autoren[text=Hans,melody=Hraban]

\stoptext """

The table t has always length 0. Where’s my error?

Do you see the difference?

\starttext

\startluacode

a = { "one", "two", "three" }

b = { x = "one", y = "two", z = "three" }

context("Table a: " .. #a) context.par() context("Table b: " .. #b)

\stopluacode

\stoptext

Wolfgang

Oops, yes: #count is not for string indices. Thus I shouldn’t break if #t==0. BTW is there a function for printing a table (like pprint.pprint in Python)? The other problem was I had a return instead of context(). Thank you for the hint! Hraban

Am 03.07.25 um 20:12 schrieb Wolfgang Schuster:

Am 03.07.2025 um 19:53 schrieb Henning Hraban Ramm:

...

BTW is there a function for printing a table (like pprint.pprint in Python)?

table.serialize(...)

Am 03.07.25 um 20:12 schrieb Thomas A. Schmitz:

print (inspect (table))

It's a module in Lua that is integrated into the ConTeXt Lua interpreter.

Thank you both! (The difference, as fair checked: table.serialize shows the name of the table variable, where inspect says "table".) Hraban

On 7/3/25 7:53 PM, Henning Hraban Ramm wrote:

BTW is there a function for printing a table (like pprint.pprint in Python)?

print (inspect (table)) It's a module in Lua that is integrated into the ConTeXt Lua interpreter. HTH Thomas