17

фев

MongoDB and distinct values in arrays. Adding a value into an array. View raw mongo-push-unique.js hosted with ❤ by GitHub. Models are fancy constructors compiled from Schema definitions. An instance of a model is called a document.Models are responsible for creating and reading documents from the underlying MongoDB database. Compiling your first model.

Numpy.unique numpy. Unique ( ar, returnindex=False, returninverse=False, returncounts=False, axis=None )Find the unique elements of an array.Returns the sorted unique elements of an array. There are three optionaloutputs in addition to the unique elements:. the indices of the input array that give the unique values.

the indices of the unique array that reconstruct the input array. the number of times each unique value comes up in the input arrayParameters:ar: arraylikeInput array.

Unless axis is specified, this will be flattened if itis not already 1-D. Returnindex: bool, optionalIf True, also return the indices of ar (along the specified axis,if provided, or in the flattened array) that result in the unique array. Oracle vm virtualbox extension pack. Returninverse: bool, optionalIf True, also return the indices of the unique array (for the specifiedaxis, if provided) that can be used to reconstruct ar.

Style sampling yamaha s770. That sells all Yamaha music products. Andy's is one of the few dealers in the U.S. Music Merchants), as a TOP 100 Dealer five times since 2011, and has been an authorized Yamaha dealer continuously since 1977.

MongoMongo Uniq Array

Returncounts: bool, optionalIf True, also return the number of times each unique item appearsin ar. New in version 1.13.0.Returns:unique: ndarrayThe sorted unique values. Uniqueindices: ndarray, optionalThe indices of the first occurrences of the unique values in theoriginal array. Only provided if returnindex is True. Uniqueinverse: ndarray, optionalThe indices to reconstruct the original array from theunique array. Only provided if returninverse is True.

Uniquecounts: ndarray, optionalThe number of times each of the unique values comes up in theoriginal array. Only provided if returncounts is True. See also numpy.lib.arraysetops Module with a number of other functions for performing set operations on arrays.NotesWhen an axis is specified the subarrays indexed by the axis are sorted.This is done by making the specified axis the first dimension of the arrayand then flattening the subarrays in C order. The flattened subarrays arethen viewed as a structured type with each element given a label, with theeffect that we end up with a 1-D array of structured types that can betreated in the same way as any other 1-D array. The result is that theflattened subarrays are sorted in lexicographic order starting with thefirst element.Examples.