#dot notation

MongoDB : Post 2.1 : Dot notation in Documents

Dot operator in mongoDB helps to access elements of an array and also to access fields of any embedded document.This leads to faster reads as the desired result is just a query away.When an array of elements is being queried,it has to be queried corresponding to its index position and while querying an embedded document,the query would be corresponding to the field name.

Activity 1 : Get values…

Xah Lee with some poignant criticism of dot notation in object-oriented programming:

The issue with OOP's dot notation, is the disconnection of correspondence between syntax ＆ semantics. The problem isn't the dot notation, but OOP's convention of dot notation. In the OOP's dot notation, given a.b.c(d), one cannot tell whether “a” is the data or “d” is the data.