Suppose we have collection of documents having array and we want to update document having array on the basis of some condition. Insert document in movies collection db.movies.insertMany([ { title:…
To check a string value is a date, there are many ways to do that. But problem occur when string is a number, since a number can be converted into…
Radom data is useful to test many scenarios and check our code stability in many ways. We can get random documents from given collection. Solution 1: Using $sample Randomly selects…
Angular Material disables style encapsulation for all components in the library. However, the default style encapsulation in your own components still prevents custom styles from leaking into Angular Material components.…
There are many possible solutions to solve this problem. All solution almost same but one of them can work for you. Let me know what work for you. Solution 1:…
Let say we have an array of object which and object contain age and name. Now we want to find out youngest person and elder person. For these we have…
In many places in programming, we want to replace special character with _ or anything else. There are many ways to replace but I am going to use replace function…
There are many libraries which we can used to perform this task. But some time we do not want to use library in that case we have to use pure…
