2. Values and text

Replace App.kalm with this small experiment:

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pub fun main() -> Unit:
    fix text = "a quiet morning"
    var words = 0
    words += 3
    sayLine(@"$words words: $text")

fix binds a value once. var allows updates. Local types are inferred here; public function results still have explicit types. Prefix a string with @ to interpolate a binding such as $words.

kalm run

3 words: a quiet morning

Try changing the sentence and its count. In a later lesson, a loop will count the words for you.

Read values and nullability for the complete explanation.