21 lines
260 B
V
21 lines
260 B
V
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interface Widget{
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mut:
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init()
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}
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struct Button{}
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fn (mut b Button) init(){}
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struct Window{
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mut:
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widgets []Widget
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}
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fn (mut w Window) add(mut widget Widget){}
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fn main(){
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mut win := Window{}
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mut btn := Button{}
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win.add(btn) // should be an error here
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}
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