By Kyle Burns, Scott Isaacs
Key FeaturesWrite apps for the multithreaded global with Clojure's taste of useful programmingDiscover Clojure's positive aspects and merits and use them on your present projectsThe publication is designed in order that you can be capable positioned to take advantage of your current abilities and software program wisdom to turn into a more advantageous Clojure developerBook DescriptionWe have reached some degree the place machines aren't getting a lot speedier, software program tasks have to be introduced fast, and top of the range in software program is extra hard as ever.
- Building Polyfills: Web Platform APIs for the Present and Future
- jQuery Recipes
- Java Demystified
- Mastering Web Application Development with Express
Postgres makes it simple, meaning the cost of securing our website is low. There’s one last thing we’ll need to change, because we’re using a feature that’s Postgres-specific. rb, which is a Ruby source file using the DSL for Rails migrations. Rails creates this by examining the database schema and creating what is essentially a single migration, in Ruby, to create the schema from scratch. This is what tests use to create a fresh database. rb. This is easily remedied by telling Rails to use SQL, rather than Ruby, for storing the schema.
This isn’t the most amazing search algorithm, but it’s sufficient for our purposes here, which is to implement the feature, but also demonstrate the performance problems present in an even moderately complex query. There are two tricky things about the search we’re running. The first is that we want case-insensitive matches, and Active Record has no API to do that directly. The second is that we want exact email matches first. Fortunately, Postgres provides a means to do both of these things. We can use SQL like lower(first_name) LIKE 'bob%' and we can use complex expressions in the order by clause.