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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How to convert hex to string in Golang using the DecodeString method from encoding/hex package.

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How to setup a proxy with authentication for HTTP client in Golang example using http.Transport and http.Client. Simple example calling httpbin.org test server.

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How to setup a proxy for HTTP client in Golang example using http.Transport and http.Client. Simple example calling httpbin.org test server.

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