How to trim (remove) leading and trailing whitespace from string in Golang using the TrimSpace, Trim, TrimLeft, TrimRight methods from strings package.

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Here are two simple methods to get the dimensions of an image in Golang: using image.DecodeConfig method if the image is not already loaded and image.Decode method is the image is loaded.

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How to split a string into slice using Golang. For a simple split by a singular character you can use Split() method from strings package. For more complex rules the regexp.Split() method can be used.

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How to convert a string into uppercase in Golang using ToUpper method from strings package.

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How to convert a string into lowercase in Golang using ToLower method from strings package.

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How to convert a string into a hex string in Golang using EncodeToString method from encoding/hex package.

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