Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0
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Reference: Logic

Logic · rule

syntax.logical_operator

Logical operator written in another language's form.

Area 3, Logic; not declinable; the next step is usually the agent's.

Logical operators are the words and, or and not, for &&, || and !, and SQL's AND, OR and NOT.

example
type Open = Bool {}type Paid = Bool {}type Done = Bool {}function done(open: Open, paid: Paid) -> Done {    return Done(open && paid)}
text
error: Jadpo writes `and`, not `&&` --> main.jadpo:8:22  |8 |     return Done(open && paid)  |                      ^^ write `and`  reason: `&&`, `||` and `!` are the logical operators of JavaScript, Rust, Go, Java, C#, Kotlin and Swift; Jadpo writes them as words: `and`, `or` and `not`.  next: Use `and` instead of `&&` (agent)  rule: syntax.logical_operator  help: https://jadpo.dev/docs/errors/syntax.logical_operatorcheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/syntax.logical_operator.md.Built from Jadpo main at a707efb.