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  • Is this not an expensive operation in template? Commented May 12, 2020 at 7:59
  • @Joseph, This is not an operation in template side and you are handling the logic in .ts file only so this is best approach only.. It is always better to handle the logics in typescript file.. Commented May 12, 2020 at 8:00
  • @Joseph, Also added another example that has another scenario of not having any cues data values in any of the array.. Hope this helps and I hope that this solution won't cause any performance issue.. Commented May 12, 2020 at 8:29