[#BloombergLP-bdljsn-Tokenizer-setAllowTrailingTopLevelComma]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Tokenizer.adoc[Tokenizer]::setAllowTrailingTopLevelComma
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:mrdocs:

Set the `allowTrailingTopLevelComma` option to the specified `value` and return a non‐`const` reference to this tokenizer. If the `allowTrailingTopLevelComma` value is `true` this tokenizer will successfully tokenize JSON values where a comma follows the top‐level JSON element. If the option's value is `false` then the tokenizer will reject documents with such trailing commas, such as `{},`. By default, the value of the `allowTrailingTopLevelComma` option is `true` for backwards compatibility. Note that a document without any JSON elements is invalid whether or not it contains commas. The behavior is undefined unless `e_RELAXED == conformanceMode()`.

== Synopsis

Declared in `<bdljsn_tokenizer.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:BloombergLP/bdljsn/Tokenizer.adoc[Tokenizer]&
setAllowTrailingTopLevelComma(bool value);
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