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A list of extensions in a comma separated HTTP field value.
        Defined in header <boost/beast/http/rfc7230.hpp>
      
class ext_list
| Name | Description | 
|---|---|
| A constant iterator to the list. | |
| The type of each element in the list. | 
| Name | Description | 
|---|---|
| Return a const iterator to the beginning of the list. | |
| Return a const iterator to the beginning of the list. | |
| Return a const iterator to the end of the list. | |
| Return a const iterator to the end of the list. | |
| Return true if a token is present in the list. | |
| Construct a list. | |
| Find a token in the list. | 
This container allows iteration of the extensions in an HTTP field value. The extension list is a comma separated list of token parameter list pairs. If a parsing error is encountered while iterating the string, the behavior of the container will be as if a string containing only characters up to but excluding the first invalid character was used to construct the list.
ext-list = *( "," OWS ) ext *( OWS "," [ OWS ext ] ) ext = token param-list param-list = *( OWS ";" OWS param ) param = token OWS [ "=" OWS ( token / quoted-string ) ]
        To use this class, construct with the string to be parsed and then use http::ext_list::begin
        and http::ext_list::end, or range-for to iterate each
        item:
      
for(auto const& ext : ext_list{"none, 7z;level=9, zip;no_context_takeover;bits=15"}) { std::cout << ext.first << "\n"; for(auto const& param : ext.second) { std::cout << ";" << param.first; if(! param.second.empty()) std::cout << "=" << param.second; std::cout << "\n"; } }
        Convenience header <boost/beast/http.hpp>