chaining

In C# how does one implement the ability to chain methods in one's custom classes so one can write something like this: myclass.DoSomething().DosomethingElse(x); etc... Thanks! Chaining is a good solution to produce new instance from existing instances: public class MyInt { private readonly int value; public MyInt(int value) { this.value = value; } public MyInt Add(int x) { return new MyInt(this.value + x); } public MyInt Subtract(int x) { return new MyInt(this.value - x); } } Usage: MyInt x = new MyInt(10).Add(5).Subtract(7); You can also use this pattern to modify an existing instance, but

Take this example code: int a = 10; int b = 20; int c = 30; int & foo1() { qDebug() << "foo1" << endl; return a; } int & foo2() { qDebug() << "foo2" << endl; return b; } int & foo3() { qDebug() << "foo3" << endl; return c; } int main(void) { foo1() = foo2() = foo3() = 7; } Since assignment goes right to left, I expected to see foo3 first and foo1 last, but it is the opposite. Are the rules for such scenarios concretely defined and how? Also, does the compiler differentiate between assignment and other operators and how would that be possible if you are using the = operator in a different

Is there any way we can chain our own generated key pair with an existing certificate which has been chained to a root CA (eg: verisign)? Basically my question is described in diagram below Verisign Root CA | --> Company XYZ certificate | ---> Server foo certificate Once i've generated key pair for server foo, how do I chain it with Company XYZ cert? If Company XYZ has an Intermediate Certificate Authority certificate then you can. This kind of certificates are authorized by the root CA to issue new certificates and this fact is determined at creation time by specific properties (Basic

I'm currently studying C# and I'm learning about constructors and the chain calling of constructors so as not to have to paste the same code (the same value for variables) in each constructor. I have three constructors, one with no parameters, one with three parameters and one with four parameters. What I'm looking to do is, use the default constructor to call the constructor with three parameters, passing default values for the parameters (variables) and the constructor that has three parameters, I'm looking for that to call the constructor with four parameters. I seem to have the first one

I have a field that when you leave focus on it, it changes the layout of the page. I also have buttons on the page that submit my form. If I go into my field and type a value, then click the button, the button click event never fires. This seems to happen because the layout is changing before the click event gets fired, which means the button changes places. By the time the click event fires, it's firing on an empty area, not the button. Here is a jsfiddle of the issue: http://jsfiddle.net/xM88p/ I figured out a way to solve this for IE but after extensive research I can't find/access the same

Got this table in SQL Server 2005, which is used to maintain a history of merging operations: Column FROM_ID (int) Column TO_ID (int) Now I need a query that takes the original FROM_ID as input, and returns the last available TO_ID. So for instance: ID 1 is merged to ID 2 Later on, ID 2 is merged to ID 3 Again later, ID 3 is merged to ID 4 So the query I'm trying to put together will take as input (in the WHERE clause I presume) ID 1, and should give me the last available TO_ID as a result, in this case 4. I suppose I need some recursion logic, but don't really know how to start. Thanks !

I want to chain commands this way : var cmdGroups = []*commands.CmdGroup { commands.MakeCmdGroup("foo", cmd1, cmd2, cmd3).AddConstraint(cmd1, cmd2).AddConstraint(cmd2, cmd1, cmd3), commands.MakeCmdGroup("bar", cmd1, cmd4).AddConstraint(cmd1, cmd4), } I'd like to split my chains on several lines for 80-column-lengths reasons, but Go won't let me compile this : var cmdGroups = []*commands.CmdGroup { commands.MakeCmdGroup("foo", cmd1, cmd2, cmd3) .AddConstraint(cmd1, cmd2) .AddConstraint(cmd2, cmd1, cmd3), commands.MakeCmdGroup("bar", cmd1, cmd4) .AddConstraint(cmd1, cmd4), } what can I do ? nemo

I have the following code: someService.fnReturnsPromise() .then(function () { return someService.fnReturnsAnotherPromise(someArg); }) .then(function (resultsOfSecondFn) { // do stuff with results }); I feel as if this should work; however, resultsOfSecondFn isn't actually the results, it's the promise itself that I returned. To make it work the way I want, I have to do this: someService.fnReturnsPromise() .then(function () { return someService.fnReturnsAnotherPromise(someArg); }) .then(function (promiseReturn) { promiseReturn.then(function (results) { // do stuff with results }); }); This is