parameters

问题 In my game there is a map view that contains a 50x50 grid of tiles. When you click on the tile you get sent to that tiles view and attack things, etc. The only difference between these "tiles" as far as the code will be concerned is the tiles ID, aka. which number on the grid. That number will be passed to the server on init to handle the rest. Obviously, with that being the only difference in tiles it would be a mistake to create a scene "1", scene "2"...scene "2500" and call SceneManager

问题 I have seen example code like this before class C { C(); ~C(); foo(T1, T2); } C::foo(T1, T2) { //not using T1/T2 } versus conventional code like this class D { D(); ~D(); bar(T1 t1, T2 t2); } D::bar(T1 t1, T2 t2) { //using t1 and t2 } And I am wondering what is the purpose of not defining your type variables for usability? Do most people do this just to hint that those parameters of the api are not currently in use, but to ensure backward compatibility in the future? Is it possibly for RTTI,

问题 I have seen example code like this before class C { C(); ~C(); foo(T1, T2); } C::foo(T1, T2) { //not using T1/T2 } versus conventional code like this class D { D(); ~D(); bar(T1 t1, T2 t2); } D::bar(T1 t1, T2 t2) { //using t1 and t2 } And I am wondering what is the purpose of not defining your type variables for usability? Do most people do this just to hint that those parameters of the api are not currently in use, but to ensure backward compatibility in the future? Is it possibly for RTTI,

问题 I have a lot of nullary methods (methods with 0 parameters) in my scala test file. Hence, instead of writing them as : def fooBar() = // I write them as : def fooBar = // I get the following warning when I do so: Warning:(22, 7) side-effecting nullary methods are discouraged: suggest defining as `def fooBar()` instead What is the meaning of the warning? I am using intelliJ as my IDE and could not really find much about this warning on the web. EDIT And, I forgot to mention, when I use the

问题 I have a lot of nullary methods (methods with 0 parameters) in my scala test file. Hence, instead of writing them as : def fooBar() = // I write them as : def fooBar = // I get the following warning when I do so: Warning:(22, 7) side-effecting nullary methods are discouraged: suggest defining as `def fooBar()` instead What is the meaning of the warning? I am using intelliJ as my IDE and could not really find much about this warning on the web. EDIT And, I forgot to mention, when I use the

问题 Goal: I want to collect the return value of a function. Question: How can I call the 'test' function to collect the return variable 'name' without passing through a parameter? Is there a way to collect a variable(values) from functions with agruments(parameters) without passing through a parameter? I have provided an example: let userName = "Jake" let userInfo = test(name: userName) func test(name: String) -> String { return name } // function call // Goal: I want to retrieve the function

问题 Goal: I want to collect the return value of a function. Question: How can I call the 'test' function to collect the return variable 'name' without passing through a parameter? Is there a way to collect a variable(values) from functions with agruments(parameters) without passing through a parameter? I have provided an example: let userName = "Jake" let userInfo = test(name: userName) func test(name: String) -> String { return name } // function call // Goal: I want to retrieve the function

问题 So, I have a HTML form and I need to send it's value as a parameter to a php function, but I also need a different value, that's not even inside the HTML. For example: <form action="methods.php" method="register"> <input type="text" placeholder="EventID"> <input type="submit" value="Register"> </form> This form would get the event id and send it as a parameter to register the user into the event. But I need to send the user as a parameter also ( function register($user, $eventid) ) and I have

问题 I tried to upgrade Mindapp Gem from Rails 4 to Rails 5. There are a lots of codes like below need to be fixed because Rails 5.1 no longer support mass assignment to_bson directly. Mindapp::Xmain.create :service=>service, :start=>Time.now, :name=>service.name, :ip=> get_ip, :status=>'I', # init :user=>current_user, :xvars=> { :service_id=>service.id, :p=>params, :id=>params[:id], :user_id=>current_user.try(:id), :custom_controller=>custom_controller, :host=>request.host, :referer=>request.env[

问题 I tried to upgrade Mindapp Gem from Rails 4 to Rails 5. There are a lots of codes like below need to be fixed because Rails 5.1 no longer support mass assignment to_bson directly. Mindapp::Xmain.create :service=>service, :start=>Time.now, :name=>service.name, :ip=> get_ip, :status=>'I', # init :user=>current_user, :xvars=> { :service_id=>service.id, :p=>params, :id=>params[:id], :user_id=>current_user.try(:id), :custom_controller=>custom_controller, :host=>request.host, :referer=>request.env[