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In some languages other than swift, a variable or a constant, can or cannot have a value. So a variable or a constant, can be null, if no value was assigned to them, or if set to null.

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The post Optionals in swift a tutorial first appeared on Twise Random.]]>  

In some languages other than swift, a variable or a constant, can or cannot have a value. So a variable or a constant, can be null, if no value was assigned to them, or if set to null.

What … Read More

The post Optionals in swift a tutorial first appeared on Twise Random.]]>