Encoding on Gopher Coding

MD5 Encoding in Golang

Sun, 12 Feb 2023 09:00:00 +0000

You can use the crypto/md5 [docs] package in Go to perform MD5 encoding on a string. We have an example function below, it will take your string and write it as a hash. Then convert that binary back into a hexadecimal string using Sprintf.

Note: There are more modern approaches than md5 these days - and it isn’t recommended for many things, but definitely not password hashing.

Here’s an example of how to use it:

How to Write Data to CSV in Go

Sat, 11 Feb 2023 13:00:00 +0000

In Go, you can use the standard library package encoding/csv [docs] to write data to a CSV file. Below is a example that shows you how you can write a slice of user-data related strings to a CSV file.

The code creates a new file called users.csv and writes a slice of records to it. Finally, the Flush method is used to flush any buffered data to the underlying io.Writer, which is the file.

Convert HEIC to JPG in Go

Sat, 17 Sep 2022 12:00:00 +0000

The “High Efficiency Image File Format” or HEIF is an image format often used by Apple devices. Although called HEIF, the file types are often heic (presumably the ‘c’ stands for container?) They use a similar encoding method of video formats and are deemed better quality and lower file size than standard jpeg files.

In our example, we’re trying to convert these heic files back into jpg files though - so we can use them elsewhere, display them or what ever we choose.