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filterinplace = function (cond, T)
local oldsize, newsize = #T, 0
for i=1,oldsize do
if cond(T[i]) then
newsize = newsize + 1
T[newsize] = T[i]
-- ^ or: if newsize ~= i then T[newsize] = T[i] end
end
end
for i=newsize+1,oldsize do
T[i] = nil
end
return T
end
Sorry, but the code above does not work:
t = { "a", "b", "a", }
filterinplace (function (r) return r=="a" end, t)
for i = 1, #t do print(i,v) end
The result was:
1 nil
2 nil
Regards,
Tomás