Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

bool

A true-or-false value.

bool (System.Boolean) has exactly two values, true and false, and does not convert to or from numbers.

Examples

bool isMember = points >= 100; is true or false, nothing else.