[#BloombergLP-bdlb-CStringLess-operator_call] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/CStringLess.adoc[CStringLess]::operator() :relfileprefix: ../../../ :mrdocs: Return `true` if the specified `lhs` string is lexicographically ordered before the specified `rhs` string, and `false` otherwise. The behavior is undefined unless both `lhs` and `rhs` point to null‐terminated strings. == Synopsis Declared in `<bdlb_cstringless.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- bool operator()( char const* lhs, char const* rhs) const; ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#