Useful tips for everyday
How do I send a record link in an email template in Salesforce? Add record link However, the recipient will see something like this: “https://na17.salesforce.com/001o00000031ABP.”…
How do I combine PCA and Kmeans? First, the PCA procedure is applied to the data. Using the principal components the data is mapped into…
How do I convert pixels to JPG? How to convert an image to JPG, PNG, WEBP, TIFF or GIF format? To convert an image to…
How do you reverse an alpha channel? Re: How do I invert the alpha channel of an image? Add action: “Add mask” Change mask opacity…
What sketch is on my Arduino? A sketch is the name that Arduino uses for a program. It’s the unit of code that is uploaded…
What causes negative voltage? A negative voltage is a relative excess of electrons compared to some other point. If 0 V is no voltage. Negative…
How to get the type of geometry column in Postgres? The geometry_columns view takes care to remove any Z/M suffixes. (The same can be done…
How do you protect yourself when using Tor? Here’s how you use the Tor Browser safely: Set your security level. Tor Browser comes with three…
How is Riemann zeta function calculated? Riemann zeta function, function useful in number theory for investigating properties of prime numbers. Written as ζ(x), it was…
What happens when you run a shell command? The breakdown is as follows: The shell reads the user input from stdin (the keyboard) after it…