[whstl]

Good answer. To elaborate on it and provide examples.

In languages that don't have expression inspection capabilities you have to replace the `(p) => p.Price < 100` part with something that is possible for the language to inspect.

Normally it's strings or something using a builder pattern.

For example, in TypeORM:

    queryBuilder.where("product.price < :price", { price: 100 })

And in Mongoose:

    Product.find({ price: { $lt: 100 } });

The LINQ-ish version would be:

    Product.find((p) => p.price < 100);

--

Similarly, for Ruby on Rails:

    Product.where("price < ?", 100)

Ruby's Sequel overloads operators to have a more natural syntax:

    DB[:products].where { price < 100 }

But the "lambda" syntax would be:

    Product.where { |p| p.price < 100 }