What does err and doc mean in cursor.toArray(function(err, docs){})?

Question

This is from official MongoDB documentation.

toArray cursor.toArray(function(err, docs){}) converts the cursor object into an array of all the matching records. Probably the most convenient way to retrieve results but be careful with large datasets as every record is loaded into memory.

collection.find().toArray(function(err, docs){
    console.log("retrieved records:");
    console.log(docs);
});

err - error if happened during reading from cursor. If no error then null. Docs - array of documents read from cursor. — Andrei Beziazychnyi, May 18 '14 at 19:22
Better documentation for `toArray` can be found here: http://mongodb.github.io/node-mongodb-native/api-generated/cursor.html#toarray — JohnnyHK, May 18 '14 at 19:24

score 1 · Accepted Answer · answered May 18 '14 at 20:15

1

docs is an array with all the documents returned by the cursor.

When there was an error, err is an object which describes that error.

answered May 18 '14 at 20:15

Philipp

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Could you link official documentation that substantiates this? – geoyws May 19 '14 at 01:25

What does err and doc mean in cursor.toArray(function(err, docs){})?

1 Answers1