45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
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Object-Oriented Programming (OOP)
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================================
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{{#include ../links.md}}
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Rhai does not have _objects_ per se, but it is possible to _simulate_ object-oriented programming.
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Use [Object Maps] to Simulate OOP
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--------------------------------
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Rhai's [object maps] has [special support for OOP]({{rootUrl}}/language/object-maps-oop.md).
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| Rhai concept | Maps to OOP |
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| ----------------------------------------------------- | :---------: |
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| [Object maps] | objects |
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| [Object map] properties holding values | properties |
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| [Object map] properties that hold [function pointers] | methods |
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Examples
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--------
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```rust
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// Define the object
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let obj = #{
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data: 0,
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increment: Fn("add"), // when called, 'this' binds to 'obj'
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update: Fn("update"), // when called, 'this' binds to 'obj'
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action: Fn("action") // when called, 'this' binds to 'obj'
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};
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// Define functions
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fn add(x) { this.data += x; } // update using 'this'
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fn update(x) { this.data = x; } // update using 'this'
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fn action() { print(this.data); } // access properties of 'this'
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// Use the object
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obj.increment(1);
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obj.action(); // prints 1
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obj.update(42);
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obj.action(); // prints 42
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```
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