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Category: Guides

Create View with two RecyclerViews for Android

In Android, you can use the RecyclerView widget to create a scrolling list of items. If you want to have two RecyclerViews in a single layout, you can use a LinearLayout or a RelativeLayout to organize them. Here’s an example of how you can create a view with two RecyclerViews . . . Read more

What to do after cross-validation

After performing cross-validation, you typically proceed with the following steps: Remember that the exact steps may vary based on the specific nature of your problem and the type of model you are working with. It’s important to continuously iterate and improve your models based on feedback and new data.

javascript – Basic authentication with fetch?

Certainly! Basic authentication with the fetch API in JavaScript involves including the authentication credentials in the request headers. Here’s an example of how you can use Basic Authentication with fetch: In this example: Please note that using Basic Authentication without HTTPS is not secure, as credentials are sent in plaintext. . . . Read more

Spark groupBy, duplicates and physical store

It seems like you’re asking about using Spark’s groupBy operation, handling duplicates, and potentially storing the results in a physical store. Let’s break down each part: Here, we are saving the grouped DataFrame as a Parquet file. You can change the format and path based on your requirements. Keep in . . . Read more

sql – Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint ‘apply_ibfk_2’ in the referenced table ‘Job’

The error message you’re encountering, “Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint ‘apply_ibfk_2’ in the referenced table ‘Job’,” indicates that there is an issue with creating a foreign key constraint in your SQL database. Specifically, it’s saying that there is no index on . . . Read more