backwards-compatibility

So we've seen the preview sdk and the neat new stuff like ActionBar and Fragments. Making a lot of method calls will be unavoidable to make use of these, so what strategies are there for maintaining 1 version of the app, which will let me use all the snazzy new stuff but also work on devices running 2.3 or below? My app targets 1.5 - 2.3 at the moment. The same fragment APIs are now available as a static library for use with older versions of Android; it's compatible right back to Android 1.6. There are a few tricks you can use to see if the various new APIs are available to your app.

Some legacy code that I have to build upon, really makes me feel the cons of global CSS reset . I have the old foo.css that starts with * {margin:0; padding:0;} and I used to copy it to a different file bar.css , tweak it too my needs ( out with the CSS reset ), and use it to replace foo.css only in the code I'm writing. I do this not to worry about backwards compatibility with the older sections of the site. Now this is quite cumbersome: for global changes I have to remember to modify both files. So now my bar.css is extending foo.css , starting with: @import url("style.css"); The problem is

StringIO is the file-like string buffer object we use when reading pandas dataframe from text, e.g. "How to create a Pandas DataFrame from a string?" Which of these two imports should we use for StringIO (within pandas)? This is a long-running question that has never been resolved over four years. StringIO.StringIO (Python 2) / io.StringIO (Python 3) Advantages: more stable for futureproofing code, but forces us to version-fork, e.g. see code at bottom from EmilH. pandas.compat.StringIO pandas.compat is a 2/3 compatibility package ("without the need for 2to3") introduced back in 0.13.0 (Jan

As you know Microsoft Build conference is running on this week. I hardly find whether 8.1 based store app has backward compatibility with 8 based app or not. If I upgrade my Store App ( what if I make update on preview period ) to 8.1 based template, does it run on Windows 8 without problem? Or, do I need to treat some special cases? I already know that Snapped ViewState was removed. If there's no problem, please link relative article on answer. I could not find it. No, once you migrate an app to Windows 8.1 Preview, the minimum OS version in the manifest will be set to 6.3.0 which will only

It was impossible in 2007, but is there now a way to check which Matlab versions a function exists for? For example, in Wolfram Mathematica, the documentation indicates in which version the function was released: e.g. the GapPenalty() documentation mentions " New in 7 ". Have a look to the FEX function when . I'd go to the release-notes page for some useful information. For example. http://www.mathworks.com/help/releases/R2013b/stats/release-notes.html Then do a search in web page. Hope this helps. 来源： https://stackoverflow.com/questions/19778832/how-can-i-check-since-which-matlab-version-a

I would like to upgrade my TortoiseSVN installation to version 1.7. We have a VisualSVN server running with a SVN 1.6 repository. Do I need to upgrade the repository to 1.7 before I can update my client, or is TortoiseSVN backwards compatible? I know that during the upgrade from TortoiseSVN 1.6 to 1.7, I need to convert my working copy to the new format, but during a commit does it have some logic to see the server version and adapt appropriately? In the release notes Older clients and servers interoperate transparently with 1.7 servers and clients ... Subversion 1.7 servers use the same

Are there any resources that can test a jQuery script/extension/plugin/whatever for version compatibility issues? Just wrote a small jQuery plugin to help with version compatibility issues... feel free to improve upon it. (function($) { /** * Used for version test cases. * * @param {string} left A string containing the version that will become * the left hand operand. * @param {string} oper The comparison operator to test against. By * default, the "==" operator will be used. * @param {string} right A string containing the version that will * become the right hand operand. By default, the

I've come across a backwards compatibility issue when deploying my application on android 1.6. Im getting a VerifyError on this piece of code: if(android.os.Build.VERSION.SDK_INT >= 11) { getActionBar().setBackgroundDrawable(getResources().getDrawable(R.drawable.actionbar_bg)); } This is not unexpected since getActionBar() doesn't exist pre API 11, however post-1.6 (API 5 and higher?) builds all semi-gracefully go around this according to the logcat message im getting when deploying for example on a API level 8 device; 06-27 16:47:04.333: INFO/dalvikvm(11529): Could not find method com.me.app