closures

Is it possible to reflect into or otherwise view the source of a PHP closure object? That is, if I do something like this $closure = function() { return 'Hi There'; }; and then something like this var_dump($closure); PHP outputs object(Closure)[14] That is, I know the object's a closure, but I have no idea what it does. I'm looking for a reflection method, function, or debugging extension that will allow me to dump the actual body of anonymous function. What you can get from PHP is limited, using reflection you can just obtain the parameter signature of the function and the start and ending

In my project, I have both Objective-C and Swift code. I have some objects that have properties containing blocks to clean up some UITableView configuration. Using it works in Objective-C, but crashes when using Swift. I have reduced the problem to be as minimal as possible, while still being reproducible. // in Objective-C @interface MyClass : NSObject @property (copy, nonatomic) NSString* (^block)(); - (NSString *)callTheBlock; @end @implementation MyClass - (NSString *)callTheBlock { if (self.block) { return self.block(); } else { return @"There is no spoon"; } } @end // In Swift // I

I have a fairly large criteria closure in my Grails application, and I would like to reuse part of it in several places in my application. Rather than duplicating the section I need to reuse, I'd like to define this as a separate closure and reference it wherever it is needed, but I am struggling a bit with the syntax. This is a simplified / cut down version, but essentially my criteria looks something like this: def criteriaClosure = { and { // filtering criteria that I'd like to reuse in lots of places or { names.each { name -> sqlRestriction(getFilteringSql(name), [someId]) } } if

I am going through the How to make a chain of function decorators? to understand decorator. In the following example, we see that "method_to_decorate" is accessible to wrapper function because of closures. But, I didn't understand how arguments self and lie are accessible to the wrapper function. def method_friendly_decorator(method_to_decorate): def wrapper(self, lie): lie = lie - 3 # very friendly, decrease age even more :-) return method_to_decorate(self, lie) return wrapper class Lucy(object): def __init__(self): self.age = 32 @method_friendly_decorator def sayYourAge(self, lie): print "I

Current setup: var placeId; function selectPlace(place) { $('#selectPlace').html('Selected Place: <b>' + place.Name + '</b>'); $('#map').hide(400); placeId = place.Id; } $(document).ready(function() { $('#postMessage').click(function() { alert("PlaceId: " + placeId); }); }); Can/should I be using closures? Based on your comments, it seems like what you're looking for is this: function selectPlace(place) { if(!place){ return selectPlace.placeId; }else{ $('#selectPlace').html('Selected Place: <b>' + place.Name + '</b>'); $('#map').hide(400); selectPlace.placeId = place.Id; } } $(document).ready