RE: question

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Subject: RE: question
From: "Peter Prade" <prade@...>
Date: 2001年10月30日 09:49:51 +0100

Hi!

i have no idea what your test program should be doing, but i suggest using print instead of write.

print doesn't choke on other values than strings or numbers, and it automatically adds the newline at the end.

i can also offer this function, since you seem to be having problems with visualizing tables:

-- print entire table
function dump(table)
if type(table) == "table" then
local indizes = {}
foreach(table, function(i,v) tadd(%indizes, i) end)
if getn(indizes) == 0 then
print("<empty table>")
else
sort(indizes)
foreachi(indizes, function(_, index)
local value = %table[index]
if type(index) == "string" then
print(index .. ":\t" .. tostring(value))
else
print("[" .. index .. "]\t" .. tostring(value))
end
end)
end
else
print(table)
end
end

hope this helps,

Peter

-----Original Message-----
From: owner-lua-l@tecgraf.puc-rio.br [mailto:owner-lua-l@tecgraf.puc-rio.br]On Behalf Of Volkan Civelek
Sent: Tuesday, October 30, 2001 9:23 AM
To: Multiple recipients of list
Subject: question

Hi,

This is my first email and fyi i am very new born in Lua.

Now the question is;

why does the below code gives me

"error: bad argument #1 to `write' (string expected, got nil)
stack traceback:
1: function `write' [C]
2: main of file `ask.lua' at line 10

Error: Script failed"

this???

--case.lua

function foo (rt, from, s)
for i=1,10 do
tinsert (rt, from, strsub(s,i,i+1))
end
end
local combi = {}
local var1 = {"1234567890"}
foo(combi, 34, var1[1])
write (combi[34], "\n")
write (combi[35], "\n") --this guy has a problem

--EOF

and combi[34] writes 0 ??

TIA
Volkan

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References:
- question, Volkan Civelek

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