Is This String in JSON Format?

Validating JSON Structure Within Strings

To determine whether a string is in JSON format, a straightforward function can be devised. Given an input string, this function aims to discern if it adheres to the JSON syntax.

Validating JSON Format

To verify whether an input string conforms to the JSON structure, a common approach is to rely on built-in tools provided by the programming language. In Go, utilizing the standard library's json package allows for convenient JSON parsing.

The following function demonstrates how to check if a string is in JSON format:

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

In this function, str represents the input string to be validated. It converts this input into a json.RawMessage type to facilitate JSON parsing. The json.Unmarshal function is then employed to attempt parsing the input string as JSON. If the parsing operation is successful, indicating the presence of valid JSON syntax, the function returns true, signifying the input's JSON format. Conversely, if the parsing fails, suggesting an invalid JSON structure, the function returns false.

Implementing this function allows efficient examination of input strings to determine their adherence to JSON formatting, aiding in data validation and handling in your Go programs.

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