.\" Man page generated from reStructuredText. . . .nr rst2man-indent-level 0 . .de1 rstReportMargin \\$1 \\n[an-margin] level \\n[rst2man-indent-level] level margin: \\n[rst2man-indent\\n[rst2man-indent-level]] - \\n[rst2man-indent0] \\n[rst2man-indent1] \\n[rst2man-indent2] .. .de1 INDENT .\" .rstReportMargin pre: . RS \\$1 . nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin] . nr rst2man-indent-level +1 .\" .rstReportMargin post: .. .de UNINDENT . RE .\" indent \\n[an-margin] .\" old: \\n[rst2man-indent\\n[rst2man-indent-level]] .nr rst2man-indent-level -1 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]] .in \\n[rst2man-indent\\n[rst2man-indent-level]]u .. .TH "MONGOC_COLLECTION_KEYS_TO_INDEX_STRING" "3" "May 07, 2024" "1.27.1" "libmongoc" .SH SYNOPSIS .INDENT 0.0 .INDENT 3.5 .sp .EX char * mongoc_collection_keys_to_index_string (const bson_t *keys) BSON_GNUC_WARN_UNUSED_RESULT; .EE .UNINDENT .UNINDENT .SH PARAMETERS .INDENT 0.0 .IP \(bu 2 \fBkeys\fP: A \fI\%bson_t\fP\&. This is expected to match the form of the \fBkey\fP field in the \fI\%createIndexes\fP command. .UNINDENT .SH DESCRIPTION .sp This function returns the canonical stringification of a given key specification. See \fI\%Manage Collection Indexes\fP for example usage. .sp It is a programming error to call this function on a non\-standard index, such one other than a straight index with ascending and descending. .SH RETURNS .sp A string that should be freed with \fI\%bson_free()\fP\&. .SH AUTHOR MongoDB, Inc .SH COPYRIGHT 2017-present, MongoDB, Inc .\" Generated by docutils manpage writer. .