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Messages - Jim Bauwens
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406
« on: June 23, 2012, 04:24:08 pm »
It should not allow it. You can modify __newindex so to parse the input and possible modify it.
The above code is just the concept, you can build on it and make it do what you want.
Edit: wait, it does. Let me fix it
407
« on: June 23, 2012, 04:06:12 pm »
Well, here is almost the same for a matrix:
function createProxy(tbl)
local mt = {}
local proxy = {}
mt.__index = function (t, key)
local rownumber = rawget(t, "rownumber")
if rownumber then
return tbl[ rownumber][ key]
else
return tbl[ key]
end
end
mt.__newindex = function ()
print("You are not allowed to write to this table!")
end
for key, row in ipairs(tbl) do
proxy[ key] = {}
proxy[ key].rownumber = key
setmetatable(proxy[ key], mt)
end
setmetatable(proxy, mt)
return proxy
end
a = createProxy{{5,4,3,2,1},{3,6,9,1}}
print(a[ 2][ 3])
a[ 2][ 3] = 3
print(a[ 2][ 3])
408
« on: June 23, 2012, 12:48:21 pm »
If you don't want users to have direct write access to the table, you can use something like this:
function createProxy(tbl)
local mt = {}
local proxy = {}
mt.__index = function (_, key)
return tbl[ key]
end
mt.__newindex = function ()
print("You are not allowed to write to this table!")
end
setmetatable(proxy, mt)
return proxy
end
a = createProxy{1,2,3,4,5}
print(a[2])
a[2] = 3
I'm taking a look at your code.
Edit: ouch, the forum is changing table keys to nobbc
Edit2: Okay, I think class you be something for you. You should be able to protect your variables enough.
409
« on: June 23, 2012, 12:17:42 pm »
Here is the class function (although slightly modified): class = function(prototype)
local derived={}
if prototype then
derived.__proto = prototype
function derived.__index(t,key)
return rawget(derived,key) or prototype[nobbc]
end
else
function derived.__index(t,key)
return rawget(derived,key)
end
end
function derived.__call(proto,...)
local instance={}
setmetatable(instance,proto)
instance.__obj = true
local init=instance.init
if init then
init(instance,...)
end
return instance
end
setmetatable(derived,derived)
return derived
endI think you want something like this: Matrix = class()
function Matrix:init(mat)
self.matrix = mat
end
function Matrix:set(x, y, n)
self.matrix[y][x] = n
end
matrix1 = Matrix{{1,2,3},{1,2,3},{1,2,3}}
matrix2 = Matrix{{1,2,3},{1,2,3}}
matrix1:set(1,1,3)
matrix1 and matrix2 are not connected in anyway. You can expand the matrix class to your wishes. Also, with metatables/-methods you could even make that matrix3=matrix1+matrix2 is possible 
411
« on: June 22, 2012, 12:25:57 am »
That's stll a good amount Regarding the fake solar panel, I have had two calculators with fake ones too....
412
« on: June 22, 2012, 12:12:19 am »
The CAS will never be as good, and it will only be used for solving of formulas. No problem there (PTT removes access to all document, even Lua so there will not be a problem anyway)
413
« on: June 21, 2012, 06:25:08 pm »
It will run, but you will not get results. It is because the math is so complex 
414
« on: June 21, 2012, 06:11:54 pm »
Sorry, I don't think there will be a prism version ever.
Also, something we forgot to mention is that it requires a CAS calculator. We are busy making a CAS in lua, but it will still take some time before we can use that.
415
« on: June 21, 2012, 03:45:33 pm »
Thank you all for your votes, I set it to the bottom as default. Darl, that would be a bit weird 
416
« on: June 21, 2012, 06:57:44 am »
TI will fix the issue, and they will update it as soon as they can. I'm sure they will not waits months to release it.
417
« on: June 20, 2012, 02:34:13 pm »
3.2.1219 isn't much different. The slowness isn't fixed yet, but the cause has been found.
418
« on: June 20, 2012, 04:15:31 am »
Aw, I'm sorry that nobody is responding. I would if I knew a bit more. Anyway I see you got your saferam solution on yAronet ^^ And that screenshot looks nice Edit: hey some else responded too 
419
« on: June 18, 2012, 05:19:26 pm »
I have had a similar issue on my netbook. It might be related to your bios, so check for an update. Also be sure you got the correct graphics driver.
420
« on: June 18, 2012, 02:18:47 am »
Is the problem related to the "middle" in [lua]gc:drawString[/lua] you used, or did you not use anything before ?
(I recommend you to use "top". I have no problems in 3.1/3.2 with it, as it's the most accurate argument)
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