Scala return statements in anonymous functions

Formally speaking return is defined as always returning from the nearest enclosing named method A return expression return e must occur inside the body of some enclosing named method or function. The innermost enclosing named method or function in a source program, f , must have an explicitly declared result type, and the type of … Read more

Are there any drawbacks to using anonymous functions in JavaScript? E.g. memory use?

All JavaScript functions will behave in the same manner in that they inherit the variable environments in entire scope chain leading up to, and including, themselves. This is equally true for both anonymous and named functions. This chain of references to the outer environments stays with each function, even if the function is passed into … Read more

Best way to run a simple function on a new Thread?

Your question isn’t very clear, I’m afraid. You can easily start a new thread with some code, using anonymous methods in C# 2, and lambda expressions in C# 3: Anonymous method: new Thread(delegate() { getTenantReciept_UnitTableAdapter1.Fill( rentalEaseDataSet1.GetTenantReciept_Unit); }).Start(); new Thread(delegate() { getTenantReciept_TenantNameTableAdapter1.Fill( rentalEaseDataSet1.GetTenantReciept_TenantName); }).Start(); Lambda expression: new Thread(() => getTenantReciept_UnitTableAdapter1.Fill( rentalEaseDataSet1.GetTenantReciept_Unit) ).Start(); new Thread(() => getTenantReciept_TenantNameTableAdapter1.Fill( … Read more

What does this “(function(){});”, a function inside brackets, mean in javascript? [duplicate]

You’re immediately calling an anonymus function with a specific parameter. An example: (function(name){ alert(name); })(‘peter’) This alerts “peter“. In the case of jQuery you might pass jQuery as a parameter and use $ in your function. So you can still use jQuery in noConflict-mode but use the handy $: jQuery.noConflict() (function($){ var obj = $(‘<div/>’, … Read more

this value in JavaScript anonymous function

Inside of your anonymous function this is the global object. Inside of test, this is the instance of MyObject on which the method was invoked. Whenever you call a function like this: someFunction(); // called function invocation this is always the global object, or undefined in strict mode (unless someFunction was created with bind** — … Read more

Can you name the parameters in a Func type?

You can’t do it with the built-in Func types, but it’s easy enough to create your own custom delegate type and use it in a similar way: _messageProcessing.Add(“input”, (x, y, z) => “output”); _messageProcessing.Add(“another”, (x, y, z) => “example”); // … delegate string DispatchFunc(DynamicEntity first, DynamicEntity second, IEnumerable<DynamicEntity> collection); Dictionary<string, DispatchFunc> _messageProcessing;