In Move, there is no primitive type for string, however, there is a package to handle this. Let’s see it in action module hello_world::debugger { #[test] public fun test_print_types() { let vect: vector<u8> = b"Hola mundo"; let str: std::string::String = std::string::utf8(vect); std::debug::print(&vect); // [debug] 0x486f6c61206d756e646f std::debug::print(&str); // [debug] "Hola mundo" } }

After working on some projects in typescript, I’ve found that it is not easy to find a doc in Jest to mock an instance method and any instance method of a class. If you come from RSpec, I hope this will help you with a couple of hours of googling. Mock an instance method …

SSO is an authentication system that allows your single account to log in to multiple applications using only one single session with the authenticated server ( SSO server). Google account is a good showcase of the SSO application. You can use a Gmail account (SSO account ) to log in…

There is an excellent Solana dev tutorial to interact with wallets here, but you may have missed an important point in the tutorial as noted below: For these to work properly, any use of useWallet and useConnection should be wrapped in WalletProvider and ConnectionProvider. …

You might have a need to attach multiple certs to your AWS application load balancer, for example, you might have the domains https://example.asia, https://example.us, https://example.kh …

Dart programming is a language optimized for building user interfaces used in the Flutter mobile framework. It combines the world of OOP and functional. I am a big fan of functional programming, One of the problems in Dart I found boring and inconvenient is to write the built-in List#map API…

class ShipmentItem < ApplicationRecord has_one_attached :image validates :width, presence: true, if: ->(item) { !item.image.attached?} end it 'is valid if image is attached' do file = Rails.root.join('spec', 'support', 'assets', 'shipment_item', 'wine-box.jpeg') image = ActiveStorage::Blob.create_after_upload!( io: File.open(file, 'rb'), filename: 'wine-box.jpeg', content_type: 'image/jpeg' # Or figure it out from `name` if you have non-JPEGs

From time to time I have this warning Warning: the running version of Bundler (2.1.2) is older than the version that created the lockfile (2.1.4). We suggest you to upgrade to the version that created the lockfile by running `gem install bundler:2.1.4 Now I can inspect gem list bundler The…

Building a non-refresh web app with a desktop-like experience is not that hard, you just need a right tool. Introduction Vuejs is a great javascript framework, but building a full functionality web app is not easy. It lacks an architectural structure and its router generates a lot of boilerplate code. This…