Lua - Safely remove items from an array table while, EVER. Because if you want to delete items from a table, just use t ['something'] = nil;. If you want to delete items from an array (a table with numeric indices), use ArrayRemove (). By the way, the tests above were all ex...
while (lua_next(L, -2)) { // stack now contains: -1 => value; -2 => key; -3 => table // copy the key so that lua_tostring does not modify the original lua_pushvalue(L, -2); // stack now contains: -1 => key; -2 => value; -3 => key; -4 => table printf("%s ...
Andrew correctly advised against attempting to remove a value from a table while iterating through it, as this is a prevalent problem across several programming languages. Instead, it is recommended to first store the value and then proceed with its removal. local e for i = 1, #heads do if...
Original List 1 2 3 4 5 lua: main.lua:19: attempt to update a read-only table stack traceback: [C]: in function 'error' main.lua:49: in metamethod 'newindex' main.lua:19: in method 'push' main.lua:66: in main chunk [C]: in ?
table.foreachi( args, LuaUnit.runTestClassByName ) else if argv and #argv > 0 then table.foreachi(argv, LuaUnit.runTestClassByName ) else -- create the list before. If you do not do it now, you -- get undefined result because you modify _G while iterating ...
Lua supports Object Oriented Programming by the concept of Table and first class functions. An object is having a state and functions to modify the state. In similar fashion, table can have state and function. But two tables with same values are different objects. Using metatables, we can ...
But suppose the onclick() handler for the button wanted to modify the rtk.CheckBox below it, this wouldn't be possible currently. (At least not without manually doing a traversal of the widget hierarchy from the window, which is lame.) So the obvious solution here is borrow more ideas ...
However, any attempt to -- modify the table by that method (e.g., __newindex = rawset) will lead to an -- error being thrown. -- -- Finally, tables with 'protected' metatables, i.e., a '__metatable' field, -- cannot be frozen. t = table.freeze(t) -- Return true if ...
When iterating over all keys of the global table, Lanes has no guarantee that it will hit "string" before or after "string2". However, the values associated to string.match and string2.match are the same C function. Lanes doesn't expect a C function value to be encountered more than ...
When we say “all code paths”, we actually mean it from a statistical perspective instead of literally iterating through every single code path in a program. Obviously the latter would be prohibitively expensive to do in reality due to combinatorial explosions. We just make sure all code paths...