Is This String Valid JSON?

Hurdles in Detecting JSON Format Strings

In daily programming practices, developers may encounter the need to determine whether a given input string conforms to JSON format. This can be challenging because JSON syntax differs markedly from typical string formats.

Solution: Unmarshaling JSON Strings

One reliable approach to handle this task is to employ json.Unmarshal(). This function returns an error if the input string is not valid JSON, thereby providing a clear indication of the input's format.

func IsJSON(str string) bool {
    var js json.RawMessage
    return json.Unmarshal([]byte(str), &js) == nil
}

In this example, the json.Unmarshal() function attempts to convert the input string into a JSON representation. If the conversion is successful, the function returns nil, signaling that the input is in JSON format. Otherwise, json.Unmarshal() returns an error, indicating that the input is not JSON.

By wrapping this logic in a simple function, you can easily check the format of any input string, making it a versatile tool in your programming arsenal.

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