dynamic 2D array

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kernel
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dynamic 2D array

Postby kernel » 12 Jan 2016

Hi,

Wonder would MC team consider adding dynamic 2D array alongside with its existing 1D sibling?
If it's already exist, excuse me for my ignorance then.

For example:

Code: Select all

2DArrays:
my2DArray1[ , ], my2DArray2[ , 2];


2DArray_setmaxrows(my2DArray1, 10);
2DArray_setmaxcolumns(my2DArray1, 15);

2DArray_setmaxrows(my2DArray2, 5);

......


value1=2DArray_getmaxrows(my2DArray1);
value2=2DArray_getmaxcolumns(my2DArray1);

......

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fbertram
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Re: dynamic 2D array

Postby fbertram » 15 Jan 2016

Hi Kernel,

you can do this using the Lua integration I created. See here:
viewtopic.php?f=5&t=49242

The code for creating and using a dynamic 2D array would look like this:

Code: Select all

//==============================================================================
// Description: Demo code to show dynamic 2D arrays with Lua
// History: 2016i15, FUB, created
//==============================================================================

variables:
LuaState(0);

once begin
ClearPrintLog;

// create a new Lua environment
LuaState = Lua.New();

// set the dimensions of the array
Lua.SetGlobalNumber(LuaState, "ii", 30);
Lua.SetGlobalNumber(LuaState, "jj", 25);

// create a 1-based 2D array and initialize w/ zero
Lua.Exec(LuaState, "A={} for i=1,ii do A[i]={} for j=1,jj do A[i][j]=0 end end");

// set values in 2D array
for value1 = 1 to 30 begin
for value2 = 1 to 25 begin
Lua.SetGlobalNumber(LuaState, "x", value1);
Lua.SetGlobalNumber(LuaState, "y", value2);
Lua.SetGlobalNumber(LuaState, "z", value1 + value2);
Lua.Exec(LuaState, "A[x][y]=z");
end;
end;

// retrieve values from 2D array
for value1 = 1 to 30 begin
for value2 = 1 to 25 begin
Lua.SetGlobalNumber(LuaState, "x", value1);
Lua.SetGlobalNumber(LuaState, "y", value2);
Lua.Exec(LuaState, "z=A[x][y]");
print("A[", value1:1:0, "][", value2:1:0, "]=", Lua.GetGlobalNumber(LuaState, "z"):1:0);
end;
end;

// close Lua environment
Lua.Close(LuaState);
end;

//==============================================================================
// end of file
Hope this helps,
best regards


Felix


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