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I couldn't find a description of the Terra for loop in a few minutes of poking through the website and the paper. How is it different from the numeric Lua for l

• tekacs 13y ago
  From http://terralang.org/getting-started.html#control_flow http://terralang.org/getting-started.html#control_flow Terra also includes for loop. This example counts from 0 up to but not including 10: for i = 0,10 do C.printf("%d\n",i) end This is different from Lua’s behavior (which is inclusive of 10) since Terra uses 0-based indexing and pointer arithmetic in contrast with Lua’s 1-based indexing. Ideally, Lua and Terra would use the same indexing rules. However, Terra code needs to frequently do pointer arithmetic and interface with C code both of which are cumbersome with 1-based indexing. Alternatively, patching Lua to make it 0-based would make the flavor of Lua bundled with Terra incompatible with existing Lua code. Lua also has a for loop that operates using iterators. This is not yet implemented (NYI) in Terra, but a version will be added eventually. The loop may also specify an option step parameter: for i = 0,10,2 do c.printf("%d\n",i) --0, 2, 4, ... end