smalltalk - Transcript show doesn't work -


i'm making linked list structure pharo smalltalk , , i'm trying print list have overview , used 'transcript show:' method doesn't work prints "an element" (the name of objects in list) on transcript , , when use separately on workspace print '3' or 'hello' example it's works perfectly. have read lot of similar topics , not resolve problem: here code : 

    printlist      |current|      current := element newelement: first.      [ current  == nil ] whilefalse: [ transcript show: (current getvalue); cr.                                         current := current getnext ].

thanks ! :)

it looks code working , tries print element transcript calls elmement>>asstring. since object doesn't implement method, falls inherited object>>asstring method tries clever , uses default pattern generates 'an element'.

the solution simple - implement asstring method in element class:

asstring     ^'hello element'

you can smarter this. want make output uniquely identifiable. if element class has 'name' instance variable can use example:

asstring     ^(name ifnil: ['(empty)']), ' element'

this print like:

aymane bo element


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