The "in" operator doesn't work well with map<any, ...>

[dumblob]

0$ dao -e 'm={->}; m["a"]=0, m["b"]=5; if ("a" in m) io.writeln(true) else io.writeln(false); io.writeln(m)'
false
{ "a" -> 0, "b" -> 5 }
= none

0$ dao -e 'm={->}; m["a"]=0, m["b"]=5; if ("a" in (map<string, any>)m) io.writeln(true) else io.writeln(false); io.writeln(m)'
true
{ "a" -> 0, "b" -> 5 }
= none

[daokoder]

There was a minor bug in checking the key types before searching the key. Fixed.