Wa-lang's Manual

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Ending's law: "Any application that can be compiled to WebAssembly, will be compiled to WebAssembly eventually."

4.4. if statements

The general form of conditional statements is:

     if initial statement, conditional expression {
         code block 1
     } else {
         Code block 2
     }

Among them, conditional expression must be of Boolean type. The conditional statement first executes the optional initial statement (initial statement, can be omitted, which means there is no initial action), and then determines whether conditional expression is true, if so, execute Code Block 1, otherwise execute Code Block 2. else {...} may be omitted if no action is required if conditional_expression is false.

It should be noted that by default, statement ends with a line break, so the else statement needs to be on the same line as the } of the if code block. If else starts a new line, a compilation error will occur.

The following is an example of multiple conditional statement:

func Compare(x, y: int) => int {
    if x < y {
        return 1
    } else if x > y {
        return -1
    } else {
        return 0
    }
}