backwards-compatibility

问题 We have had issues with Mootools not being very backward compatible specifically in the area of drag and drop functionality. I was wondering if anyone has had any similar problems with jQuery not being backward compatible. We are starting to use it quite heavily and are thinking about upgrading to a newer version to start using several plugins that require it. Will we have any issues if we get rid of the older version? 回答1: jQuery seems to be nicely backward compatible. I have been using it

问题 We have had issues with Mootools not being very backward compatible specifically in the area of drag and drop functionality. I was wondering if anyone has had any similar problems with jQuery not being backward compatible. We are starting to use it quite heavily and are thinking about upgrading to a newer version to start using several plugins that require it. Will we have any issues if we get rid of the older version? 回答1: jQuery seems to be nicely backward compatible. I have been using it

问题 We have had issues with Mootools not being very backward compatible specifically in the area of drag and drop functionality. I was wondering if anyone has had any similar problems with jQuery not being backward compatible. We are starting to use it quite heavily and are thinking about upgrading to a newer version to start using several plugins that require it. Will we have any issues if we get rid of the older version? 回答1: jQuery seems to be nicely backward compatible. I have been using it

问题 We have had issues with Mootools not being very backward compatible specifically in the area of drag and drop functionality. I was wondering if anyone has had any similar problems with jQuery not being backward compatible. We are starting to use it quite heavily and are thinking about upgrading to a newer version to start using several plugins that require it. Will we have any issues if we get rid of the older version? 回答1: jQuery seems to be nicely backward compatible. I have been using it

问题 Can I use JDK 1.7 to compile the code written in JDK 1.6? Is Java strict downward compatible? Do I need to keep JDK 1.6 and JDK 1.7 together in the same machine? 回答1: Can I use JDK 1.7 to compile the code written in JDK 1.6? Yes. Is Java strict downward compatible? If the cross-compilation options are specified when compiling. Those are most notably: -source -target -bootclasspath - which requires an rt.jar of the JRE (not JDK) being targeted 回答2: Can I use JDK 1.7 to compile the code

问题 I've been looking for Apple's documentation and posts regarding this issue, but I didn't make it clear how should I deal with this, since most of information I found is about storyboards and autolayout feature. I'm using nib files instead of storyboards, and in addition I need to support iOS 5+, so I can't use autolayout. I'm using Xcode 4.6.3 and I've observed that, in IB, going to the view's Attributes inspector > Simulated Metrics, you can choose its size ("Retina 3.5 Full Screen", "Retina

问题 I have a Flash application that requires Flash version 10.0 to run. I want to add native mouse cursors, which were introduced in Flash 10.2, but I don't want to require all my users to upgrade, and I don't want to have to compile two separate versions of my app. Is there any way at runtime I can detect if the cursors are available, and then use them? It seems like if you only compile for Flash 10.0, it marks the SWF version header "10", and you have no access to the new APIs. And if you

问题 My question is, how do I get the following custom unwind segue to work on a device with a version prior to iOS 9 as well as on a device running iOS 9? I have a Custom Segue showing a view controller, and then have a corresponding Custom Unwind Segue. This code has worked fine in iOS 8, and is implemented by creating subclasses of UIStoryboardSegue and implementing the perform method. Then I override the following method in my custom Navigation Controller: - (UIStoryboardSegue *)

问题 There is an issue on a site I have been working on that for some reason the SVG image markers are not showing up in IE 11. I have two sets of markers: the default zoomed out has PNG markers for the suburbs zoomed in has address specific numbered SVG ones I use a fallback for older browsers that don't support SVG (testing it with modernizr). I am using the old Google Chart markers for IE 11 to get it to work (testing the user agent string to id it). I want to know if anyone has an idea as to:

问题 It is my understanding that ARMv7 processors, such as the Cortex-A9, are mostly backwards-compatible with code for older ARM architecture versions. However, I've read reports of segfaults trying to run ARM9 code on a Cortex-A8, for example. What parts of ARMv4/5/6 (ARM7TDMI/ARM9/ARM11) code will not work on an ARMv7 processor? What features or architectural characteristics exist in these older ARM architecture versions that can cause a program built for these versions to fail on ARMv7? 回答1: