How to use continue and goto continue in Lua (simulating C++ C# continue)

introduce

You should have seen continue in C# or C++. Its usage is actually to interrupt the current loop and directly enter the next loop. The code is as follows:

   for (int i = 0; i < 10; i++)
   {
    
    
        if (i == 2) continue;
        Debug.Log(i);
   }

The above prints as follows:

0
1
3
4
5
6
7
8
9

Well, there is actually no continue syntax in Lua, but there is goto continue in Lua, which can be executed to a certain line to continue execution, which is equivalent to specifying the order of execution and the statements to be executed. In addition to this method, you can also use while to simulate it in Lua. The following of the continue statement is the specific implementation method of these two methods.

specific method

goto continue

This can specify the execution order and execution statements of Lua code. It has one more function than continue, which can jump to a certain line for execution. Let’s look at the code below to see how to implement it.

for i = 1, 10 do
    if i == 2 then
        --这里goto 直接跳到for 的结尾 不会触发print(i)
        goto continue
    end
    logError(i)
    ::continue::
end

Print as follows:

1
3
4
5
6
7
8
9
10

while simulates continue method

while neutralbreakbreakwhile Method
breakalso breakforcirculation

for i = 1, 10 do
    while true do
        if(i == 2) then break end
            logError(i)
        break
    end
end

Print as follows:

1
3
4
5
6
7
8
9
10

Summarize

The above two methods are the two that I commonly use. Of course, if you want to make the judgment in for, while or repeat until, it is also possible. There are many ways to achieve it. If there is a better method, you can leave a message. , thank you all for your support, I hope to give you some free care and attention, thank you.