Removed stringstream from assignment from double.

MString.cpp

@@ -84,11 +84,9 @@ namespace coreutils {
    }
 
    MString::MString(double value) {
-      std::stringstream temp;
+      std::string temp = std::format("{}", value);
-      temp << std::format("{}", value);
+      setSize(temp.length());
-      std::string temp2 = temp.str();
+      memcpy(this->data, (char *)temp.data(), temp.length());
-      setSize(temp2.length());
-      memcpy(this->data, (char *)temp2.data(), temp2.length());
       cursor = this->data;
    }
    
@@ -133,11 +131,9 @@ namespace coreutils {
    }
 
    MString &MString::operator=(double value) {
-      std::stringstream temp;
+      std::string temp = std::format("{}", value);
-      temp << std::format("{}", value);
+      setSize(temp.length());
-      std::string temp2 = temp.str();
+      memcpy(this->data, (char *)temp.data(), temp.length());
-      setSize(temp2.length());
-      memcpy(this->data, (char *)temp2.data(), temp2.length());
       cursor = this->data;
       return *this;
    }

testing/compile

@@ -1,4 +1,4 @@
 #!/bin/bash
-g++ -g -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
+g++ -g -std=c++20 -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
-g++ -g -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
+g++ -g -std=c++20 -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
 #g++ -o jstring_test jstring_test.cpp -I.. -L.. -lCoreUtils