Statements

Statements are the basic building blocks of the solus language and every line consists of either an expression or a statement. Statements do not evaluate to a value, meaning they cannot appear on the right hand side of any expression.

var, val

The var statement is used to define a local variable, just like local in Lua or most languages that use it. On the other hand, the val statement is used to denote a value that cannot change, or constant.

Example

var loc = 1;
val con = 2;
con = 3; # Compile Error

if c {} else {}

The if/else statements are used to create branching paths in your code based on a condition. These are fundamental to every programming language in existence. Note that if/else do not only exist as statements, but also as an expression (see Expressions section).

Example

if cond {
    return a;
} else {
    return b;
}
# or
if cond
    return a;
else
    return b;

for init; condition; post {}

The for loop is a construct that's familiar to any programmer, it's one of the most basic building blocks of control flow next to if/else. The for loop executes the init statement prior to the loop, then uses condition to conditionally execute the body, and finally executed the post statement.

Example

for var x = 0; x < 100; ++x
    io.println(x);

while c {}

The while statement is used to run a block while a specified condition evaluates to true. This is another fundamental building block of programming languages, and works exactly like it does in others.

Example

var x = 0;
while x < 100 {
    io.println(x);
    x += 1;
}