Std.Db.Migrate.plan
fn
plan: &Array[Std.Db.Migrate.Migration] -> &Array[Std.Db.Migrate.Applied] -> Result[Std.Db.Migrate.Plan, Std.Db.Migrate.MigrationError]This is a callable function.
What it does
What should happen next, decided without a database.
A pure function of what the program holds and what the record reports, so
the decision is checked by comparing values and only carrying it out needs
a connection.
Read the signature
- The text after the name is the type checked by Pudu.
- Read arrows from left to right: inputs come first, and the final type is returned.
- & borrows a value for this call instead of moving or copying it.
- Names inside [ ] are type arguments, such as the item type held by a collection.
- Result makes success and recoverable failure part of the function's type.