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features/binary_values/index.html
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@@ -104,7 +104,7 @@ vector &lt;|-- binary_t</code></pre> <p>By default, binary values are stored as
<span class=w> </span><span class=nt>"subtype"</span><span class=p>:</span><span class=w> </span><span class=mi>42</span>
<span class=w> </span><span class=p>}</span>
<span class=p>}</span>
</code></pre></div> </details> <h3 id=cbor><abbr title="Concise Binary Object Representation">CBOR</abbr><a class=headerlink href=#cbor title="Permanent link">&para;</a></h3> <p><a href=../binary_formats/cbor/ ><abbr title="Concise Binary Object Representation">CBOR</abbr></a> supports binary values, but no subtypes. Subtypes will be serialized as tags. Any binary value will be serialized as byte strings. The library will choose the smallest representation using the length of the byte array.</p> <details class=example> <summary>Example: serialize a binary value to <abbr title="Concise Binary Object Representation">CBOR</abbr></summary> <p>Code:</p> <div class=highlight><pre><span></span><code><span class=c1>// create a binary value of subtype 42</span>
</code></pre></div> </details> <h3 id=cbor><abbr title="Concise Binary Object Representation">CBOR</abbr><a class=headerlink href=#cbor title="Permanent link">&para;</a></h3> <p><a href=../binary_formats/cbor/ ><abbr title="Concise Binary Object Representation">CBOR</abbr></a> supports binary values and subtypes. Any binary value will be serialized as a byte string; a subtype is serialized as a tag preceding it. When parsing, tags are only read back as subtypes with <code>cbor_tag_handler_t::store</code> (see <a href=../../api/basic_json/from_cbor/ ><code>from_cbor</code></a>). The library will choose the smallest representation using the length of the byte array.</p> <details class=example> <summary>Example: serialize a binary value to <abbr title="Concise Binary Object Representation">CBOR</abbr></summary> <p>Code:</p> <div class=highlight><pre><span></span><code><span class=c1>// create a binary value of subtype 42</span>
<span class=n>json</span><span class=w> </span><span class=n>j</span><span class=p>;</span>
<span class=n>j</span><span class=p>[</span><span class=s>"binary"</span><span class=p>]</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>json</span><span class=o>::</span><span class=n>binary</span><span class=p>({</span><span class=mh>0xCA</span><span class=p>,</span><span class=w> </span><span class=mh>0xFE</span><span class=p>,</span><span class=w> </span><span class=mh>0xBA</span><span class=p>,</span><span class=w> </span><span class=mh>0xBE</span><span class=p>},</span><span class=w> </span><span class=mi>42</span><span class=p>);</span>
@@ -167,4 +167,4 @@ vector &lt;|-- binary_t</code></pre> <p>By default, binary values are stored as
</code></pre></div> <p>Note that subtype (42) is <strong>not</strong> serialized and that <abbr title="Universal Binary JSON">UBJSON</abbr> has <strong>no binary type</strong>, and deserializing <code>v</code> would yield the following value:</p> <div class=highlight><pre><span></span><code><span class=p>{</span>
<span class=w> </span><span class=nt>"binary"</span><span class=p>:</span><span class=w> </span><span class=p>[</span><span class=mi>202</span><span class=p>,</span><span class=w> </span><span class=mi>254</span><span class=p>,</span><span class=w> </span><span class=mi>186</span><span class=p>,</span><span class=w> </span><span class=mi>190</span><span class=p>]</span>
<span class=p>}</span>
</code></pre></div> </details> <!-- https://squidfunk.github.io/mkdocs-material/reference/tooltips/#adding-a-glossary --> <aside class=md-source-file> <span class=md-source-file__fact> <span class=md-icon title="Last update"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M21 13.1c-.1 0-.3.1-.4.2l-1 1 2.1 2.1 1-1c.2-.2.2-.6 0-.8l-1.3-1.3c-.1-.1-.2-.2-.4-.2m-1.9 1.8-6.1 6V23h2.1l6.1-6.1zM12.5 7v5.2l4 2.4-1 1L11 13V7zM11 21.9c-5.1-.5-9-4.8-9-9.9C2 6.5 6.5 2 12 2c5.3 0 9.6 4.1 10 9.3-.3-.1-.6-.2-1-.2s-.7.1-1 .2C19.6 7.2 16.2 4 12 4c-4.4 0-8 3.6-8 8 0 4.1 3.1 7.5 7.1 7.9l-.1.2z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date" title="October 2, 2026 09:32:15 UTC">October 2, 2026</span> </span> </aside> </article> </div> <script>var tabs=__md_get("__tabs");if(Array.isArray(tabs))e:for(var set of document.querySelectorAll(".tabbed-set")){var labels=set.querySelector(".tabbed-labels");for(var tab of tabs)for(var label of labels.getElementsByTagName("label"))if(label.innerText.trim()===tab){var input=document.getElementById(label.htmlFor);input.checked=!0;continue e}}</script> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg> Back to top </button> </main> <footer class=md-footer> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> <div class=md-copyright__highlight> Copyright &copy; 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features/binary_values/index.md
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@@ -250,7 +250,7 @@ Note that the serialization preserves the subtype, and deserializing `v` would y
### CBOR
[CBOR](https://json.nlohmann.me/features/binary_formats/cbor/index.md) supports binary values, but no subtypes. Subtypes will be serialized as tags. Any binary value will be serialized as byte strings. The library will choose the smallest representation using the length of the byte array.
[CBOR](https://json.nlohmann.me/features/binary_formats/cbor/index.md) supports binary values and subtypes. Any binary value will be serialized as a byte string; a subtype is serialized as a tag preceding it. When parsing, tags are only read back as subtypes with `cbor_tag_handler_t::store` (see [`from_cbor`](https://json.nlohmann.me/api/basic_json/from_cbor/index.md)). The library will choose the smallest representation using the length of the byte array.
Example: serialize a binary value to CBOR