Backward compatibility refers to a software or hardware system that can successfully use interfaces and data from earlier versions of the system.
Questions tagged [backwards-compatibility]
1060 questions
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Why the machine code of the ARM32 instruction cannot be found in ARM64 instruction set
Since ARM32 machine instructions can be executed directly on ARM64 processors, I thought that the machine code of the ARM32 instruction add r0, r0, r1 should be the same as that of one of these two ARM64 instructions:
add w0, w0, w1
add x0, x0,…
xiaokaoy
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Most recent breaking changes to COBOL
I've spent some time in the past year dealing with changes to my code due to Python v2->v3 and R v3->v4 changes. It got me curious as to some of the older languages that are still in use.
I know COBOL still sees occasional updates and functionality…
Colin Fredericks
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Best Practice for PyQt for incremental migration from Python 2.7 to 3.x
I am in the process of updating code for Py2/Py3 compatibility. Some of the original Python 2.7 code uses PyQt4. The standard Python 3.7 installation which we will be implementing incrementally on our users' systems is not compatible with PyQt4.
In…
CNIDog
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Old framework version incompatible with iOS 13, new framework incompatible with iOS 12
I have developed a swift iOS app that uses frameworks Moya and Alamofire.
In preparation for iOS 13, I've downloaded Xcode 11 with Swift 5.1 and when I loaded my projects, Moya framework reported error “Module compiled with Swift 5.0 cannot be…
CaptainMishan
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Are log4j appenders backwards compatible with log4j2
I have an application using log4j 2.X library and I want to use custom appenders that are coded against log4j 1.X.
While rewriting the custom appenders using log4j 2.x is an obvious option, I want to understand if that's the only option.
The…
user1512141
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How to apply Material Design to android versions < 5.0?
I given my application target as 21. So I can use the Material Design API's. But when I run the same on older devices whether I have to define different layout or theme or how it could me.
And also I have read the official document Maintaining…
M Vignesh
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Jdk 1.7 backward compatiblity with 1.6
I have a a GWT application and I want to create a war file using hudson .So I have created a job and in the configuration I have checked the build option i.e invoke ant. so it uses the build.xml from my application and creates the war file . And my…
pbhle
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Detect and remove old browser CSS hacks from a stylesheet
So I’m in the middle of fiddling around with a site and I notice it’s full of old code and IE style resets/hacks/polyfills etc. all of which it’s not necessary to support anymore.
Rather than me trawling through thousands of lines of CSS, is there a…
willstocks_
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Could not find method java.lang.String.isEmpty in early versions of android
I'm programming an app for Android, and all the app works fine on my Android 4.1, but when I'm testing it on my other Android 2.2 all works fine except the form, when you click the button to send the form the app crashes.
I'd tried commenting…
Francisco Fernando
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Do I need to worry about IE7?
Im writing a website for a holiday cottage business and am having problems making the layout work in IE7. It works fine in IE8.
Will this be a problem? or should I spend a few hours trying to make it work?
I am looking for peoples' experiences…
Tommy
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