refactor: update class method signatures to remove 'self' and improve readability

lab2/README.md

@@ -30,9 +30,9 @@ classDiagram
         + phone=(String) : Boolean
         + telegram=(String) : Boolean
         + email=(String) : Boolean
-        + self.valid_phone_number() : Boolean
-        + self.valid_telegram() : Boolean
-        + self.valid_email() : Boolean
+        + valid_phone_number() : Boolean <<class>>
+        + valid_telegram() : Boolean <<class>>
+        + valid_email() : Boolean <<class>>
         + git_present() : Boolean
         + contact_present() : Boolean
         + contact_info() : String
@@ -45,16 +45,17 @@ classDiagram
     }
 
     class StudentRepository {
-        + self.read_from_txt(file_path : String) : List~Student~
-        + self.write_to_txt(file_path : String, students : List~Student~)
+        + read_from_txt(file_path : String) : List~Student~ <<class>>
+        + write_to_txt(file_path : String, students : List~Student~) <<class>>
     }
 
     class StudentShort {
         - surname_initials : String
         + StudentShort(id : String, surname_initials : String, phone: String, telegram: String, email: String)
-        + self.from_student(student : Student) : StudentShort
-        + self.from_string(id : String, info_string : String) : StudentShort
+        + from_student(student : Student) : StudentShort <<class>>
+        + from_string(id : String, info_string : String) : StudentShort <<class>>
         + to_s() : String
+        - parse_contact_string(contact_string: String) : Array<String> <<class>>
     }
 
     class Student {
@@ -64,7 +65,7 @@ classDiagram
         - birth_date : Date
         - const NAME_REGEX : String
         + Student(id : String, git : String, phone: String, telegram: String, email: String, surname : String, name : String, patronymic : String, birth_date : Date)
-        + self.from_string(student_string : String) : Student
+        + from_string(student_string : String) : Student <<class>>
         + surname_and_initials() : String
         + to_s() : String
         + get_info() : String
@@ -72,7 +73,7 @@ classDiagram
         + name=(name : String)
         + patronymic=(patronymic : String)
         + birth_date=(birthdate : String)
-        + self.valid_name?(name : String) : Boolean
+        + valid_name?(name : String) : Boolean <<class>>
         - name_initial(name : String) : String
         - patronymic(patronymic : String) : String
     }