boost::string_view::contains not available in older versions

PaulXiCao · PaulXiCao · commit c56cac2c2ceb · 2023-12-16T13:07:38.000+01:00
diff --git a/ql/time/asx.cpp b/ql/time/asx.cpp
@@ -66,7 +66,7 @@ namespace QuantLib {
 
         // 1st character needs to represent the correct month
         const boost::string_view validMonthCodes = mainCycle ? "HMUZ" : All_MONTH_CODES;
-        return validMonthCodes.contains(std::toupper(in[0]));
+        return validMonthCodes.find(std::toupper(in[0])) != boost::string_view::npos;
     }
 
     std::string ASX::code(const Date& date) {

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ namespace QuantLib {`
`66`	`66`
`67`	`67`	`// 1st character needs to represent the correct month`
`68`	`68`	`const boost::string_view validMonthCodes = mainCycle ? "HMUZ" : All_MONTH_CODES;`
`69`		`- return validMonthCodes.contains(std::toupper(in[0]));`
	`69`	`+ return validMonthCodes.find(std::toupper(in[0])) != boost::string_view::npos;`
`70`	`70`	`}`
`71`	`71`
`72`	`72`	`std::string ASX::code(const Date& date) {`