Tail vs Delta Operator

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Imported from previous forum

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What is the different between Delta operator and Tail Operator?

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[ original email was from Mikael Brännström - m.brannstrom@ngm.se ]
The tail operator:

  • can only be applied to string values and byte vectors
  • can only replace the end of e.g. a string value
  • cannot shrink the size of a string value, only grow or remain in size

The delta operator:

  • can be applied to numbers, strings and byte vectors
  • can replace either the beginning or end of a string value
  • can shrink the size of a string

Regards
Mikael