note: this does not include symbolic operators (*, ||, &&, etc.)

  • Python: 35

    • False, None, True, and, as, assert, async, await, break, class, continue, def, del, elif, else, except, finally, for, from, global, if, import, in, is, lambda, nonlocal, not, or, pass, raise, return, try, while, with, yield

  • Java: 52

    • abstract, assert, boolean, break, byte, case, catch, char, class, const, continue, default, do, double, else, enum, extends, final, finally, float, for, goto, if, implements, import, instanceof, int, interface, long, native, new, package, private, protected, public, return, short, static, strictfp, super, switch, synchronized, this, throw, throws, transient, try, void, volatile, while

  • JavaScript: 50

    • await, break, case, catch, class, const, continue, debugger, default, delete, do, else, enum, export, extends, false, finally, for, function, if, implements, import, in, instanceof, interface, let, new, null, package, private, protected, public, return, super, switch, static, this, throw, true, try, typeof, var, void, while, with, yield, async, await, constructor, from, of

  • C++: 62

    • asm, auto, bool, break, case, catch, char, class, const, const_cast, continue, default, delete, do, double, dynamic_cast, else, enum, explicit, export, extern, false, float, for, friend, goto, if, inline, int, long, mutable, namespace, new, operator, private, protected, public, register, reinterpret_cast, return, short, signed, sizeof, static, static_cast, struct, switch, template, this, throw, true, try, typedef, typeid, typename, union, unsigned, using, virtual, void, volatile, wchar_t, while

  • C#: 77

    • abstract, as, base, bool, break, byte, case, catch, char, checked, class, const, continue, decimal, default, delegate, do, double, else, enum, event, explicit, extern, false, finally, fixed, float, for, foreach, goto, if, implicit, in, int, interface, internal, is, lock, long, namespace, new, null, object, operator, out, override, params, private, protected, public, readonly, ref, return, sbyte, sealed, short, sizeof, stackalloc, static, string, struct, switch, this, throw, true, try, typeof, unit, ulong, unchecked, unsafe, short, using, using static, void, volatile, while

  • Ruby: 42

    • __ENCODING__, __END__, __FILE__, __LINE__, BEGIN, END, alias, and, begin, break, case, class, def, defined?, do, else, elsif, end, ensure, false, for, if, in, module, next, nil, not, or, redo, rescue, retry, return, self, super, then, true, under, unless, until, when, while, yield

  • PHP: 74

    • __halt_compiler, abstract, and, array, as, break, callable, case, catch, class, clone, const, continue, declare, default, die, do, echo, else, elseif, empty, enddeclare, endfor, endforeach, endif, endswitch, endwhile, eval, exit, extends, final, finally, for, foreach, function, global, goto, if, implements, include, include_once, instanceof, insteadof, interface, isset, list, namespace, new, or, print, private, protected, public, require, require_once, return, static, switch, throw, trait, try, unset, use, var, while, xor

  • Swift: 55

    • Any, AnyObject, as, associatedtype, break, case, catch, class, continue, default, defer, deinit, do, else, enum, extension, fallthrough, false, fatalError, fileprivate, for, func, get, guard, if, import, in, indirect, infix, init, inout, internal, is, lazy, left, let, mutating, nil, none, nonmutating, open, operator, optional, override, postfix, precedence, prefix, private, protocol, public, repeat, required, rethrows, return, right, self, set, static, struct, subscript, super, switch, throw, true, try, typealias, unowned, var, weak, where, while

  • Go: 25

    • break, default, func, interface, select, case, defer, go, map, struct, chan, else, goto, package, switch, const, fallthrough, if, range, type, continue, for, import, return, var

  • Kotlin: 47

    • as, as?, break, class, continue, do, else, false, for, fun, if, in, is, null, object, package, return, super, this, throw, true, try, typealias, typeof, val, var, when, while, by, catch, constructor, delegate, dynamic, field, file, finally, get, import, init, param, property, receiver, set, setparam, where