If An airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count: If you tasavvur to build a public API, it's better to use IEnumerable than List, because you better use the most minimalistic interface/class. List lets you https://cobjectkullanm18258.blog-mall.com/28565381/c-ienumerable-kullanımı-genel-bakış