Description Usage Arguments Value See Also Examples
Return the key (name) of the field pointed to by a mongo.bson.iterator.
1 | mongo.bson.iterator.key(iter)
|
iter |
A mongo.bson.iterator. |
(string) The key (name) of the field pointed to by iter
mongo.bson.iterator,
mongo.bson.iterator.create
,
mongo.bson.find
,
mongo.bson.iterator.next
,
mongo.bson.iterator.type
,
mongo.bson.iterator.value
,
mongo.bson.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | buf <- mongo.bson.buffer.create()
# Append a string
mongo.bson.buffer.append(buf, "name", "Joe")
# Append a date/time
mongo.bson.buffer.append(buf, "created", Sys.time())
# Append a NULL
mongo.bson.buffer.append(buf, "cars", NULL)
b <- mongo.bson.from.buffer(buf)
# iterate through all values and print them with their keys (names)
iter <- mongo.bson.iterator.create(b)
while (mongo.bson.iterator.next(iter)) { # eoo at end stops loop
print(mongo.bson.iterator.key(iter))
print(mongo.bson.iterator.value(iter))
}
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