15 lines
819 B
Markdown
15 lines
819 B
Markdown
Title: The art of Events
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The art of using events to build more independent classes. /\* Found a
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better example \*/ Imagine you have a class A and a class B. A builds B,
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and B have to communicate with A (call methods ... ?) Some developers
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(Boooo (I've done it ... (Booo >> me))) will pass a reference of A
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to B "A(){B my\_B = new B(this);}" /\* Please note the newB private joke
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\*/ But what happens when you want an other class, C, who don't know A
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to build B ? So we have to remove the A's reference in the B ctor. How B
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should communicate now ? - Using Events ! B exposes an event, the
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builder of B can register on it. - B can speak to A throwing this event.
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- Every class can build a B, and can, if it needs, register on its
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events, doing whatever he wants when the event is thrown. B is now fully
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reusable!
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