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Source file src/net/textproto/header.go

Documentation: net/textproto

  // Copyright 2010 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  package textproto
  // A MIMEHeader represents a MIME-style header mapping
  // keys to sets of values.
  type MIMEHeader map[string][]string
  // Add adds the key, value pair to the header.
  // It appends to any existing values associated with key.
  func (h MIMEHeader) Add(key, value string) {
  	key = CanonicalMIMEHeaderKey(key)
  	h[key] = append(h[key], value)
  // Set sets the header entries associated with key to
  // the single element value. It replaces any existing
  // values associated with key.
  func (h MIMEHeader) Set(key, value string) {
  	h[CanonicalMIMEHeaderKey(key)] = []string{value}
  // Get gets the first value associated with the given key.
  // It is case insensitive; CanonicalMIMEHeaderKey is used
  // to canonicalize the provided key.
  // If there are no values associated with the key, Get returns "".
  // To access multiple values of a key, or to use non-canonical keys,
  // access the map directly.
  func (h MIMEHeader) Get(key string) string {
  	if h == nil {
  		return ""
  	v := h[CanonicalMIMEHeaderKey(key)]
  	if len(v) == 0 {
  		return ""
  	return v[0]
  // Del deletes the values associated with key.
  func (h MIMEHeader) Del(key string) {
  	delete(h, CanonicalMIMEHeaderKey(key))

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