JSON Marshaling in Go: MarshalIndent and Custom Formatting
Format JSON in Go using json.MarshalIndent(), custom marshalers, and struct tags. Includes streaming encoder configuration and error handling.
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Tags: json, golang, developer-tools
JSON Marshaling in Go: MarshalIndent and Custom Formatting Go's package is part of the standard library and handles the vast majority of JSON use cases without third-party dependencies. The API is clean but has a few sharp edges — particularly around struct tags, nil vs empty slices, and the handling of — that are worth understanding before you hit them in production. json.Marshal vs json.MarshalIndent produces compact, single-line JSON. takes two additional string arguments: the prefix for each line, and the indent per nesting level. The first extra argument to is the line prefix (usually ). The second is the indent string. Using gives tab indentation; (two spaces) is the most common choice in Go projects. Struct Tags: json:"field,omitempty" Struct tags control how fields are named in…
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