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// Basic examples for $bit
var res;
var coll = db.update_bit;
coll.drop();
// $bit and
coll.remove({});
coll.save({_id: 1, a: NumberInt(2)});
res = coll.update({}, {$bit: {a: {and: NumberInt(4)}}});
assert.writeOK(res);
assert.eq(coll.findOne().a, 0);
// $bit or
coll.remove({});
coll.save({_id: 1, a: NumberInt(2)});
res = coll.update({}, {$bit: {a: {or: NumberInt(4)}}});
assert.writeOK(res);
assert.eq(coll.findOne().a, 6);
// $bit xor
coll.remove({});
coll.save({_id: 1, a: NumberInt(0)});
res = coll.update({}, {$bit: {a: {xor: NumberInt(4)}}});
assert.writeOK(res);
assert.eq(coll.findOne().a, 4);
// SERVER-19706 Empty bit operation.
res = coll.update({}, {$bit: {a: {}}});
assert.writeError(res);
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