User interface contains NumericInput control, which accepts only digits.

Extend NumericInput structure so that:

  • It implements UserInput interface.
  • Add(rune) should add only decimal digits to the input. Other runes should be ignored.
  • GetValue() should return the current input.

For example, the following code should output "10":

var input UserInput = &NumericInput{}
input.Add('1')
input.Add('a')
input.Add('0')
fmt.Println(input.GetValue())
Go 1.13  
 

  •   Example case: Wrong answer
  •   GetValue() returns input: Wrong answer
  •   Add(rune) adds runes to the input: Wrong answer
  •   Add(rune) adds only decimal digits to the input: Wrong answer

Tags
Go Interfaces Public New
Easy

15min

Score Distribution
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