Remove magic values (strings, integers, etc) using permanent, immutable identifiers. Only use for things that NEVER change – not for product prices, etc. Define const at local or field.
GUID means Globally Unique Identifier Working with Enumerations A data type accepting only enumerated values that you define. Strongly typed, ridding you app of “magic strings”.
More elegant way to iterate collections In Visual Studio, after typing foreach, press tab button twice Implicitly Typed Local Variables with the var Keyword (Applies to locally scoped variable declarations) Compiler is smart enough to figure out the data type when you initialize the variable. Become increasingly important because sometimes its difficult to know whatContinue reading “C# – Looping with the Foreach Iteration Statement”
Dictionary allows you to use a key to access a member of the collection. Think: Webster’s dictionary… the word (key) then the definition (instance of a given type) Key is anything that is meaningful in your system. Key must be unique. TKEY => type of the key TValue => type of the value
Concise way to initialize a new object (or collection) with values. // No local variable name for the new Car instance needed! Collection Initializers Shortcut to create new instance of a generic collection AND initialize it by IMMEDIATELY adding new instances of given type.