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Re^3: Mutator chaining considered harmful

by Anonymous Monk
on Dec 31, 2004 at 06:29 UTC ( #418475=note: print w/ replies, xml ) Need Help??

in reply to Re^2: Mutator chaining considered harmful
in thread Mutator chaining considered harmful

Re: And that's different from storing the result of a method (whether said method is a mutator or something else) in a variable, and call a method in said variable?

Yes, it is. Consider:  $people->bob->eye('green')->color; . As a reader, I assume that the call is returning an 'eye' object, not bob, again. But if eye's a mutator, then you might find out Bob's a brown man.

Re: You mean, it makes it difficult to change a method such that has a different return value? Well, that always is non-backwards compatible. Whether the user chains, or stores the result in a variable and does something with the variable, it's going to be non-backwards compatible. In most cases you can make it backwards compatible through But perhaps, this is an issue of my style...?

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