'if' and 'else' statements

To control which code is executed when, you will have to use conditions. Conditions are one or more criterias that need to be met for specific code to be executed. For example, you will bring a jacket if it is running, else you will bring a hat.
Simple conditions
Conditions in Wing are simple: you insert the if keyword, followed by your condition, and the do keyword. All code below will be executed only if the condition is true, until you insert the end keyword.
if your condition here do
    print Hello!
end
This will execute print Hello! only if your condition here (or whatever condition you are trying to use) is true. If the condition is false, nothing will happen and the code inside of the if block will be skipped entirely.
Conditions with fallback code
In some cases, you may want to run specific code in case your condition is false. In contrary to many other languages, Wing does not give you the option to invert a condition.
Taking the example above, if you want to run code only when your condition here is false, you will have to do the following:
if your condition here do
else do
    print Hello!
end
Futhermore, if you want to run different code depending on a condition, you can do the following:
if true $morning do
    print Good morning!
else do
    print Good afternoon!
end
The code above will display "Good morning!" when true $morning is true (that is, in this specific case, when the variable $morning is true), and "Good afternoon!" otherwise.
Nested conditions
Wing makes it possible to add conditions inside of conditions as much as technical resources permit (that is, until you run out of RAM). You could do the following:
if true $morning do
    print Good morning!
else do
    if true $afternoon do
        print Good afternoon!
    else do
        print Good evening!
    end
end
The code above will display "Good morning!" when true $morning is true, and if it is not, it will display "Good afternoon!" when true $afternoon is true, and "Good evening!" otherwise.
This code is equivalent to the following code in JavaScript:
if (morning) {
    console.log("Good morning!");
} else if (afternoon) {
    console.log("Good afternoon!");
} else {
    console.log("Good evening!");
}
All the conditions
There is a wide range of conditions Wing can check for, it is even possible to add new conditions through JavaScript binding.
The list of conditions Wing comes with is available in the Conditions category.
Last modified 3mo ago