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6.1 The Prefix Unary Operators

The ‘object’ operators usually apply for ‘object’ embedded data for which non ‘object’ are also defined.

See The Object Type.

• the ‘+’ non op operators
  • - cardinal ‘+’cardinal
  • - integer ‘+’integer
  • - real ‘+’real
• the ‘+’ ‘object’ non op operators
  • - object ‘+’object

  The ‘+’ operators evaluate to their operand.

• the ‘-’ arithmetic negation operators
  • - cardinal ‘-’cardinal
  • - integer ‘-’integer
  • - real ‘-’real
• the ‘-’ ‘object’ arithmetic negation operators
  • - object ‘-’object

  The ‘-’ operators evaluate to the arithmetic negative of their operand.

• the ‘!’ logical negation operators
  • - integer ‘!’cardinal
  • - integer ‘!’integer
  • - integer ‘!’real
• the ‘!’ ‘object’ logical negation operators
  • - integer ‘!’object

  The ‘!’ operators evaluate to the logical negation of their operand.

• the ‘~’ bitwise negation operators
  • - cardinal ‘~’cardinal
  • - integer ‘~’integer
• the ‘~’ ‘object’ bitwise negation operators
  • - object ‘~’object

  The ‘~’ operators evaluate to the bitwise negation of their operand.

• the ‘~’ length/size operators
  • - integer ‘~’text
  • - integer ‘~’data
  • - integer ‘~’decq
  • - integer ‘~’list
  • - integer ‘~’index
  • - integer ‘~’record

  The ‘~’ operators evaluate to the length/size of their operand.