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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
static S substring(S s, int x) { ret substring(s, x, strL(s)); } static S substring(S s, int x, int y) { if (s == null) return null; if (x < 0) x = 0; if (x >= s.length()) return ""; if (y < x) y = x; if (y > s.length()) y = s.length(); return s.substring(x, y); } ifclass IntRange static S substring(S s, IntRange r) { ret r == null ? null : substring(s, r.start, r.end); } endif