Dyalog Forums

Posted: **Fri May 13, 2011 1:50 pm**

It appears that prototypes do support objects which is great and makes my coding cleaner for sure, but I ran into this strange behanviour:

Code: Select all

:class FooClass

:field public x

{del}FooClass
:implements constructor
:access public

x<-''
{del}
:endclass

:class BarClass

:field public x

{del}BarClass z
:implements constructor
:access public

x<-z
{del}
:endclass

Foo<-0{reshape}[]NEW #.FooClass
Foo.x


Bar<-0{reshape}[]NEW #.BarClass ''
LENGTH ERROR
Bar.x
^

Can anyone tell me why I am getting the LENGTH ERROR on Bar.x????

Posted: **Fri May 13, 2011 2:59 pm**

Well in speaking with Stanley Jordan he suggested that I implement a niladic constructor in BarClass and this seems to work. So it seems that a niladic constructor is invoked on the expression Bar.x where Bar is an empty vector containing an object (class?) prototype.

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Objects and Prototypes

Objects and Prototypes

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