closures

I'm trying to do something like this: def makeStage = { stage('a') { steps { echo 'Hello World' } } } pipeline { agent none stages { makeStage() } } But it gives me this exception: WorkflowScript: 11: Expected a stage @ line 11, column 5. makeStage() ^ Is it possible to define a stage as a external closure and if so - how? You can't define stages outside the declarative pipeline. The main purpose of declarative pipeline is to provide simplified and opinionated syntax so you can focus on what should be done (by using some of the available steps ) and not how to do it. If you are interested in

So if a language provides higher order procedure then I can have procedure that returns procedure. Something like: (define (Proc a b c) (lambda (x) ( #| method body here in terms of a b c and x |# ))) To create new procedure, I would just do something like: (define ProcA (Proc a1 b1 c1)) ; Would create ProcA that has 1 argument Similar task could be done in a language which does not support higher order procedure by defining Proc that takes 4 instead of 3 arguments and calling this procedure to define ProcA , like: (define (Proc a b c x) ( #| method body -- does not return any procedure |# )

I'm working with IE7 and some jQuery dialogs and I'm running into about a 6meg leak per dialog opened. I'm assuming it's to do with closures, but so far everything I've done to remove them haven't helped. At this point I think I've taken care of all the closures except on for a callback function I pass in, but it's still leaking 6 megs even after the dialog is closed and removed. The relevant source code is: function DialogDestroyAndRemove(event) { $(event.target).dialog("destroy").remove(); } function CallbackAndCloseDialog(event) { if (event.data.callback != undefined) { event.data.callback

The Vala Tutorial has an example about DBus using anonymous methods . Bus.own_name (BusType.SESSION, "org.example.DemoService", /* name to register */ BusNameOwnerFlags.NONE, /* flags */ on_bus_aquired, /* callback function on registration succeeded */ () => {}, /* callback on name register succeeded */ () => stderr.printf ("Could not acquire name\n")); /* callback on name lost */ I am trying to rewrite this code in Genie, but could not manage to convert the two last lines. The Genie Tutorial only has an example on how to use a closure to define an event handler . f.my_event += def (t, a)

This is a follow up question from :: (double colon) operator in Java 8 in which Java allows you to refer to methods using :: operator. Is it possible to provide some custom Functional Interface that I create and use it with :: operator? And how to do it? “Is it possible to provide some custom Functional Interface that I create and use it with :: operator? And how to do it?” It is possible and it’s as easy as you could imagine: just create an interface with exactly one method. You don’t even need the @FunctionalInterface annotation; this annotation just documents your intention and helps

I saw this Javascript quiz here: http://www.netfxharmonics.com/2008/01/NetFX-Harmonics-JavaScript-Quiz and I could not figure out this problem: (function(){ var a = 1; var b = 2; (function( ) { a = b; var b; })( ); console.log('a:'+ a); // => "a:undefined" console.log('b:'+ b); // => "b:2" })() However, if you remove the var b; declaration from the inner function, then a == 2 as you would expect. Why is this happening? (You can play with it here: http://jsfiddle.net/gnhMZ/ ) It's happening because this function: (function( ) { a = b; var b; })( ); ...assigns undefined to a . var takes effect

I am new in Python. My task was quite simple -- I need a list of functions that I can use to do things in batch. So I toyed it with some examples like fs = [lambda x: x + i for i in xrange(10)] Surprisingly, the call of [f(0) for f in fs] gave me the result like [9, 9, 9, 9, 9, 9, 9, 9, 9, 9] . It was not what I expected as I'd like the variable i has different values in different functions. So My question is: Is the variable i in lambda global or local? Does python has the same concept like 'closure' in javascript? I mean does each lambda here holds a reference to the i variable or they just

This question doesn't relate only to MouseEvent.CLICK event type but to all event types that already exist in AS3. I read a lot about custom events but until now I couldn't figure it out how to do what I want to do. I'm going to try to explain, I hope you understand: Here is a illustration of my situation: for(var i:Number; i < 10; i++){ var someVar = i; myClips[i].addEventListener(MouseEvent.CLICK, doSomething); } function doSomething(e:MouseEvent){ /* */ } But I want to be able to pass someVar as a parameter to doSomething . So I tried this: for(var i:Number; i < 10; i++){ var someVar = i;