Useful tips for everyday
What to do with blank header and footer lines? Enable the controls by checking the Print header and footer check box. This is the default…
How to add a featured image from a URL in WordPress? Of course in this case, you need to grab the featured image from the…
When to use aggregate functions in PostgreSQL select? SUM () – return the sum of all or distinct values. We often use the aggregate functions…
How does the JOIN command work in Linux? The join command works with “fields,” which, in this context, means a section of text surrounded by…
What is hash array? An array of hashes is useful when you have a bunch of records that you’d like to access sequentially, and each…
What is an IC voltage regulator? A voltage regulator is an integrated circuit (IC) that provides a constant fixed output voltage regardless of a change…
What is the difference between JDK 7 and JDK 8? Java 7 brings JVM support for dynamically-typed languages plus Type Interference for Generic Instance creation.…
How do I share a WordPress post on Facebook? Facebook Pages Go to My Site → Tools → Marketing → Connections. Select the Connect button…
How to perform ridge regression and lasso in R? We will use the glmnet package in order to perform ridge regression and the lasso. The…
What Lego sets can be motorized? We go over some of the best LEGO sets that work with this system of electronic components: 42068 LEGO…