Cobra Forums

Posted: **Thu Nov 06, 2008 10:22 am**

another of my doubts....

this code, using get

Code: Select all: class Punto var _xcoor as int var _ycoor as int var _zcoor as int def init(x as int, y as int, z as int) _xcoor = x _ycoor = y _zcoor = z get xcoor from var

and this, using pro

Code: Select all: class Punto var _xcoor as int var _ycoor as int var _zcoor as int def init(x as int, y as int, z as int) _xcoor = x _ycoor = y _zcoor = z pro xcoor from var

are absolutely equivalent or is there some deep difference?

Posted: **Thu Nov 06, 2008 5:23 pm**

"pro" is a read/write property. You can assign to it.

"get" is a read-only property. You cannot assign to it.

class X

    # example 1

    pro y from var
    # is short for the explicit declaration:
    pro y as <type of var>
        get
            return var
        set
            var = value
    # from outside the class you could say:
    x = X()
    x.y = <expr>
    # or within the class:
    .y = <expr>

    # example 2

    get y from var
    # is short for the explicit declaration:
    pro y as <type of var>
        get
            return var
    # notice the missing "set" part
    # you cannot assign to .y

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