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Example code of yomy/valueobject

Informations about the package valueobject

valueobject

Value Objects and Enums

Build Status

Installation and documentation

What is this library about

This library adds a ValueObject and EnumValueObject classes.

Examples of value object

Creating an object:

Getting value from the object

Objects with the same value are going to be the same object

You can use type hinting in methods

You can extend the object for more detailed type hinting

Objects of different class or variable type are different

Instead of a strong (===) comparison operator, you could also use the equals() method

Generally, unserialize of a value object is prohibited, as this would break the ability to compare objects by reference. However, you might have a case you don't care about strict comparison, and need to unserialize the object. You can add a WeakValueObjectTrait usage to your custom object, which will allow unserializing it, and also compare objects by the values instead of reference when using equals() method

Examples of Enum value object

Creating an enum object

Creating enum objects

or by referring referring to key

You will get an error if you try to instantiate invalid value

Examples of Positive Integer value object

As value objects are commonly used as identifiers for database entities with an integer key, positive int value object ensures a valid key object for this purpose

Creating an object:

Usually, the id key in the db cannot be a 0, so these objects are invalid:

Of course, as with a basic value object, it is intended to use these in extended classes.

All versions of valueobject with dependencies

PHP Build Version
Package Version
Requires php Version >=7.0
ext-ctype Version >=7.0
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