[#bsl-__istream_extract-0d]
= xref:bsl.adoc[bsl]::__istream_extract
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<bslstl_stringbuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
__istream_extract(
    istream&,
    char*,
    streamsize);
----

[NOTE]
====
This function is a https://en.cppreference.com/w/cpp/language/friend[hidden friend] of xref:bsl/basic_stringbuf.adoc[basic_stringbuf], declared inside its base class basic_streambuf: it can be found only through argument-dependent lookup.
====


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