PreferBinaryReceiver

Severity: Low | Category: Optimization

A detector that identifies usage of text receivers that could be replaced with binary ones.

Why is it bad?

To prevent conflicts with binary message bodies, text receivers route based on the hash of the message body contents. This is an expensive operation that requires more than 500 units of gas.

See: https://docs.tact-lang.org/book/gas-best-practices/#prefer-binary-receivers-to-text-receivers

Example

receive("one") {}

Use instead:

message(1) One {}
receive(_: One) {}