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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
sS withDollar(S s) { if (empty(s)) ret ""; if (startsWithOneOf(s, "$", "+$", "-$")) ret s; int i = 0; if (startsWithOneOf(s, "+", "-")) ++i; ret insertStringAt(s, i, "$"); }