Omnimaga
Calculator Community => TI Calculators => Lua => Topic started by: Munchor on June 20, 2011, 01:25:59 pm
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a = {1,2}
print(blocks[1]) --Should return "2", but returns "table: 0x1151460"
I really don't know what the problem is here, how to return the index of an array? Thanks
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"blocks" ? Either I'm stupid, or I don't understand why you're trying to access to a nil table ...
In the case you wrote "a" instead of "blocks", it should return "1", not "2" because the Lua is in base 1 (contrary to C/C++/PHP/etc ... in base 0)
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"blocks" ? Either I'm stupid, or I don't understand why you're trying to access to a nil table ...
In the case you wrote "a" instead of "blocks", it should return "1", not "2" because the Lua is in base 1 (contrary to C/C++/PHP/etc ... in base 0)
Oh my god, I'm so stupid, aren't I? Oh my god, I should really just get some sleep as wow, how did I miss that? Off to sleep, thanks.
Either way, check this out:
a = {{1,2},{3,4}}
print(#a)
for i=0,i<(#a),i+1 do
print(a[i][0])
end
I get as output:
2
lua: testing.lua:8: attempt to compare nil with number
stack traceback:
testing.lua:8: in main chunk
[C]: ?
i=0, number
#a, number
i+1, number (I don't even have to set this, as it's default, but I get the same error when I don't put it)
What's wrong here, then? Thanks.
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As the error says, you're trying to do a [C] for loop
In lua, it is :
for var = initial_value, end_value, [increment] do
like :
a = {{1,2},{3,4}}
print(#a)
for i=0, #a do
print(a[i][0])
end
but it is cleverest to do :
a = {{1,2},{3,4}}
print(#a)
for i, var in ipairs(a) do
print(i.." : "..var)
end