|
Strongly Typed Identifier
A strongly typed identifier is user-defined data type which serves as an identifier or key that is Strong and weak typing, strongly typed. This is a solution to the "primitive obsession" code smell as mentioned by Martin Fowler (software engineer), Martin Fowler. The data type should preferably be Immutable object, immutable if possible. It is common for implementations to handle equality testing, serialization and model binding. The strongly typed identifier commonly wraps the data type used as the primary key in the database, such as a string, an integer or universally unique identifier (UUID). Web frameworks can often be configured to model bind properties on view models that are strongly typed identifiers. Object–relational mapping, Object–relational mappers can often be configured with value converters to map data between the properties on a model using strongly typed identifier data types and database columns. Examples Passing a strongly typed identifier throughout the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strongly-typed Identifier UML Class Diagram
In computer programming, one of the many ways that programming languages are colloquially classified is whether the language's type system makes it strongly typed or weakly typed (loosely typed). However, there is no precise technical definition of what the terms mean and different authors disagree about the implied meaning of the terms and the relative rankings of the "strength" of the type systems of mainstream programming languages. For this reason, writers who wish to write unambiguously about type systems often eschew the terms "strong typing" and "weak typing" in favor of specific expressions such as "type safety". Generally, a strongly typed language has stricter typing rules at compile time, which implies that errors are more likely to happen during compilation. Most of these rules affect variable assignment, function return values, procedure arguments and function calling. Dynamic typing, Dynamically typed languages (where Type checker, type checking happens at runtime (pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
