What types are valid for the `self` parameter of a method?

Before Rust 1.33, there are only four valid method receivers: struct Foo; impl Foo { fn by_val(self: Foo) {} // a.k.a. by_val(self) fn by_ref(self: &Foo) {} // a.k.a. by_ref(&self) fn by_mut_ref(self: &mut Foo) {} // a.k.a. by_mut_ref(&mut self) fn by_box(self: Box<Foo>) {} // no short form } fn main() {} Originally, Rust didn’t have this … Read more

What is the use of mongoose methods and statics?

Database logic should be encapsulated within the data model. Mongoose provides 2 ways of doing this, methods and statics. Methods adds an instance method to documents whereas Statics adds static “class” methods to the Models itself. Given the example Animal Model below: var AnimalSchema = mongoose.Schema({ name: String, type: String, hasTail: Boolean }); module.exports = … Read more

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