[#bsl-basic_istringstream-operator_rshift-080]
= xref:bsl.adoc[bsl]::xref:bsl/basic_istringstream.adoc[basic_istringstream]::operator>>
:relfileprefix: ../../
:mrdocs:

Extracting into another streambuf.

== Synopsis

Declared in `<bslstl_istringstream.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
__istream_type&
operator>>(__streambuf_type* __sb);
----

== Description

This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.

If `__sb` is NULL, the stream will set failbit in its error state.

Characters are extracted from this stream and inserted into the `__sb` streambuf until one of the following occurs:

* the input stream reaches end‐of‐file,
* insertion into the output buffer fails (in this case, the character that would have been inserted is not extracted), or
* an exception occurs (and in this case is caught)

If the function inserts no characters, failbit is set.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *__sb*
| A pointer to a streambuf
|===


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