combined post-operators?

we're informed pre- post-increment operators, e.g.

c++;    // c = c + 1
++c;    // ditto

and "combined operators" extend principle:

c += 5;    // c = c + 5
s .= ", world";    // s = s . ", world"; e.g. php

i've mostly need 'post-combined operator', allow:

s =. "hello ";    // s = "hello " . s

obviously, wholly unequivocally useful non-commutable operators definition altered pre-/post-increment, even nonetheless syntax borrowed.

are wakeful any libel offers such an operator, since isn't some-more common?

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