Menu
In most languages, I can easily do some mathematical function (add, subtract, etc...) to a variable's current value in a short form like foo +=1. Is there something similar in Lua?
531
++ is not a C function, it is an operator. So Lua being able to use C functions is not applicable. Possible duplicate of stackoverflow.com/questions/7855525/….
The syntax for declaring a global variable in Lua is pretty straightforward, just declare whatever name you want to use for your variable and assign a value to it. It should be noted that we cannot declare a global variable without assigning any value to it, as it is not something that Lua allows us to do.
Global variables in Lua do not need declarations. Although this is handy for small programs, in larger programs a simple typo can cause bugs that are difficult to find. However, we can change that behavior if we like.
You can access the local variables of any active function by calling getlocal , from the debug library. It has two parameters: the stack level of the function you are querying and a variable index. It returns two values: the name and the current value of that variable.
No, there is no shortcut to foo = foo + 1.
155
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
