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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_j0dj86l39ch5rfaukq6gi1q712, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static bool isDollarVar(S s) {
  // Possible BREAKING CHANGE (although probably OK): now also accepting $1 etc.
  ret startsWith(s, '$') && l(s) > 1;
  // OLD: ret startsWith(s, '$') && isJavaIdentifierAfter(s, 1);
}

ifclass Symbol
ifdef SymbolWithMasterSymbol
static bool isDollarVar(Symbol s) {
  ret s != null && s.master.dollarVar;
}
endifdef
endif