BloombergLP::bdls::FdStreamBuf::xsputn

Write up to numBytes characters from buffer.

Synopsis

Declared in <bdls_fdstreambuf.h>

virtual
std::streamsize
xsputn(
    char const* buffer,
    std::streamsize numBytes) override;

Description

Write up to the specified numBytes characters from the specified buffer and return the number of characters successfully written. Note that this method does not necessarily modify the file: this method may simply write the characters to a buffer to be flushed to the file at a later time. Also note that on a Windows text file, a ` ` will be written to the file as `\r ` (counted as a single character).

Return Value

the number of characters successfully written

Parameters

Name

Description

buffer

characters to write

numBytes

maximum number of characters to write

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