Your first program

FutureBlitz is one command, fb, which builds, runs, tests, formats, and documents programs. The download page has the install line for each OS. Then make a package and run it:

fb new hello
cd hello
fb run

fb new makes a folder with a project.toml and a main.fb:

Import std.core

Print("Hello, world!")

Hello, world!

A program is the top-level code of its main file, run from top to bottom: no Main Function, no class around it. Import std.core brings in Print and the rest of the basics; everything from the standard library is imported by name, std.core too.

fb run compiles the program to a native executable in build/, then runs it. fb build only builds it, and fb build --release builds it optimized, to ship.

One file is enough

A .fb file outside a package is a program too: fb run game.fb builds and runs it, with the executable beside it.

Import std.core

For i = 3 To 1 Step -1
    Print("{i}...")
End For
Print("Go!")

3...
2...
1...
Go!

What fb says when it can’t build

The compiler’s errors say where the problem is and, often, what to write instead. A miscased keyword, like print or end if, gets the right spelling suggested, since keywords are PascalCase and the language is case-sensitive.

Next: values and types.

Next: Values and types