... statistical calculations manually in Rubycode Instead, you can use MySQL’s and Active Record’s statistical functions to get statistics, group data, and more The next chapter covers calculatiing ... average_accident_count = Person.calculate(:avg, :accident_count) average_accident_count = Person.average(:accident_count) Both print out the average number of accidents for all rows s Note The calculate ... professionally with PHP, Perl, C+ +, andVisual Basic He is the author of the Apress book Practical Ruby Gems David’s professional accomplishments include creating the Ruby on Rails engine for CoolRuby.com...
... with Rails • RSpec for test-driven development • Cucumber for behavior-driven development Scenario: Request to create a new collection Given I open the topic at the home page When I follow "create ... collection" Then I should be on the collection creation form • jQuery is now built in (as of Rails 3.1) Learning Rubyand Rails • Read these Agile Web Development with Rails and Programming Ruby ... shopping carts, ) o The view is the web pages that you show to the user, and all the behavior they contain o The controller directs traffic, receiving requests from the user, deciding what actions...
... Your client code (the code that uses a Book object) is able to read and write to any field declared with the public keyword (Public in Visual Basic and public in Visual C# ) Providing direct access ... Visual C# class contains the class declaration as well as a constructor Here’s the syntax for declaring a class in C# : class ClassName {} A constructor contains code to initialize the fields of a class ... your code than Visual Basic offers In the case of the preceding C# code, a more compact format for a property definition is shown Never sacrifice readability for compactness Add a constructor without...
... TestKPolicyLibrary.dll is written in Visual Basic 6.0 The class that performs the calculations is named cPolicyActions The CalculateRenewal function of cPolicyActions accepts a policy identification ... TKToggle can handle the ChangedValue event and process custom event handling code Which lines of code are two possible ways to achieve this goal? (Each correct answer presents a complete solution Choose ... in the client-side code G: We perform the actions in Internet Explorer that causes the client-side code to run Reference: Visual Basic andVisual C# Concepts, Introduction to Web Application...
... book will compile in safe mode, except for the code in Chapter 12, which deals specifically with unverifiable code, andcode that uses specific constructs such as unsafe uses of static_cast If ... familiar with C# , safe code is like C# code that doesn’t have any unsafe blocks In Visual Basic, it’s not possible to use unsafe constructs, so Visual Basic code is the equivalent of the C+ +/CLI safe ... any specific processor architecture However, as you’ve seen, code compiled with /clr rather than /clr:pure or /clr:safe may contain platform-specific code Also, even in pure mode, you can invoke...
... InsertWizard_Project.InsertFacultyForm A 449 cmdInsert_Click private void cmdInsert_Click(object sender, EventArgs e) { int check = 0; B C D CreateFacultyCollection(); check = CheckFacultyCollection(); if (check == ... FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty FacultyCollection.Add("Faculty } ... D CreateFacultyCollection() CheckFacultyCollection() private int CheckFacultyCollection() { int check = 0; foreach (KeyValuePair strCheck in FacultyCollection) { if (strCheck.Value...
... directive from CodeBehind="~/App _Code/ Service.cs" to CodeBehind="~/App _Code/ WebServiceSQLSelect.cs" Also change the class name from Class="Service” to Class="WebServiceSQLSelect" Go to the File|Save ... protected SqlConnection SQLConn() { string cmdString = ConfigurationManager.ConnectionStrings["sql_conn"].ConnectionString; SqlConnection conn = new SqlConnection(); conn.ConnectionString = cmdString; ... actually contains only one command line: It indicates the programming language in which the Web Service’s code- behind...
... return null; } sqlCommand.Connection = sqlConnection; sqlCommand.CommandType = CommandType.StoredProcedure; sqlCommand.CommandText = cmdString; sqlCommand.Parameters.Add("@FacultyName", SqlDbType.Text).Value ... F The Command object is created with a constructor that includes two arguments: Command string and Connection object Then the Command object is initialized with associated data objects and properties ... } SqlCommand sqlCommand = new SqlCommand(cmdString, sqlConnection); sqlCommand.CommandType = CommandType.StoredProcedure; sqlCommand.Parameters.Add("@CourseID", SqlDbType.Text).Value = CourseID;...