feat: add write_txt method to Student class

lab2/student.rb

@@ -49,7 +49,7 @@ class Student < Person
     
         File.foreach(file_path) do |line|
           line.strip!
-          next if line.empty? # Пропустить пустые строки
+          next if line.empty?
     
           begin
             student = from_string(line)
@@ -61,6 +61,20 @@ class Student < Person
     
         students
     end
+
+    def self.write_to_txt(file_path, students)
+        raise ArgumentError, "Expected an array of Student objects" unless students.is_a?(Array) && students.all? { |s| s.is_a?(Student) }
+    
+        File.open(file_path, 'w') do |file|
+          students.each do |student|
+            file.puts student.to_s
+          end
+        end
+    
+        puts "Data successfully written to #{file_path}"
+    rescue IOError => e
+        puts "An error occurred while writing to the file: #{e.message}"
+    end
   
     def surname_and_initials
       "#{@surname} #{name[0]}.#{patronymic[0]}."