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Index > Macroinstructions > Concatenation # operator for identifiers and literals

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DimonSoft



Joined: 03 Mar 2010
Posts: 1081
Location: Belarus
DimonSoft
As we all know, the # operator is able to concatenate some identifier-like pieces into a single one:
Code:
match ,
{
  abc # def equ display 'OK'
  abcdef
}    

If also works with string literals:
Code:
match ,
{
  display 'abc' # 'def'
}    

Still it doesn’t work for identifier and literal:
Code:
match ,
{
  abc # 'def' equ display 'OK'
  abc'def'
}    

while
Code:
match ,
{
  abc'def' equ display 'OK'
  abc'def'
}    

works as expected.

I understand the possible ambiguity of whether the result of such concatenation should be a string or an identifier but I also feel being able to concatenate a string literal to an identifier (having a new identifier as a result) would open a lot of possibilities for writing macros that require bookkeeping based on (macro-)user-provided string literals. (I remember it has recently been the case for multisection macros.)

Any reasons why defining the # operator behaviour for non-equal “types” might be impossible / a bad idea?
Post 27 Aug 2022, 10:37
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