compatibility

问题 I have just started considering using the HTML 5 api for a Rails/JQuery project, so I can use that great data- attribute to store values. I am worried though about browser compatibility issues. I have two questions (basic questions): In order to use HTML 5, do people need to upgrade their browsers? How does that work? Is there an up-to-the-day chart of what features each browser layout engine supports, more up-to-date than this Wikipedia article on comparing HTML layout engines and this When

问题 What considerations do I need to make if I want my code to run correctly on both 32bit and 64bit platforms ? EDIT: What kind of areas do I need to take care in, e.g. printing strings/characters or using structures ? 回答1: Options: Code it in some language with a Virtual Machine (such as Java) Code it in .NET and don't target any specific architecture. The .NET JIT compiler will compile it for you to the right architecture before running it. 回答2: One solution would be to target a virtual

问题 Is there a list of differences between how FF and IE treat javascript? for example, I remember array references was a little different between the two. 回答1: Why yes I asked this question recently: Javascript Incompatibilities/Inconsistencies Note, that there was a clear consensus that MOST (but not all) of the significant differences were DOM related, not syntax related. 回答2: IBM wrote a very good paper on differences throughout the browsers including javascript at http://www.ibm.com

问题 I have an app that's been designed with the titlebar hidden in all intents. I want to utilize Activity.openOptionsMenu() from a button. It works fine on 2.2 but when I run the app on honeycomb, calling openOptionsMenu() doesn't seem to work. Is there another way? onclick code here, if it matters. This is inside my mapview activity, extending MapView: OnClickListener ocl = new OnClickListener() { @Override public void onClick (View v) { switch (v.getId ()) { case R.id.b_options: Log.d (TAG,

问题 Here's my delimna: I am writing an application that needs to exactly reproduce the PRNG output from a game that was written in Java that uses the Java random() with a given seed to create all it's initial game 'world' data. The problem I am facing is that Java's random() and ios Swift native PRNG do not generate the same values when given the exact same seeds. Here are my test cases: In all cases the same 'seed' is used, and the formula is for a random Integer between 0 and 9. In Java: import

问题 Here's my delimna: I am writing an application that needs to exactly reproduce the PRNG output from a game that was written in Java that uses the Java random() with a given seed to create all it's initial game 'world' data. The problem I am facing is that Java's random() and ios Swift native PRNG do not generate the same values when given the exact same seeds. Here are my test cases: In all cases the same 'seed' is used, and the formula is for a random Integer between 0 and 9. In Java: import

问题 I have some really great addins in Visual Studio 2008 that I don't want to lose, but I've heard that Visual Studio 2010 will use MEF. Does it mean that I can say goodbye to my dancing banana ? 回答1: There are three levels of extensibility in Visual Studio : Macros Add-ins VS Packages I can confirm that VS2008 Add-ins work perfectly well in VS2010 beta2. You just have to edit the .AddIn file and replace "9.0" by "10.0". I don't know about VS Packages though. 回答2: Unless the direction has

问题 I want to use access 2000 and 2003 databases in access 2010. Since I don't want to check if everythings's working manually I am looking for a tool that analyzes VBA code for errors or compatibility issues that occur using access 2010 (or if available at least access 2007). 回答1: See utility here and explanations here. And the enternal refrain: COMPILE ! Before and after migrating. 来源： https://stackoverflow.com/questions/7688802/migrating-from-access-2000-2003-to-access-2010

问题 I want to use access 2000 and 2003 databases in access 2010. Since I don't want to check if everythings's working manually I am looking for a tool that analyzes VBA code for errors or compatibility issues that occur using access 2010 (or if available at least access 2007). 回答1: See utility here and explanations here. And the enternal refrain: COMPILE ! Before and after migrating. 来源： https://stackoverflow.com/questions/7688802/migrating-from-access-2000-2003-to-access-2010

问题 I just learnt from Why do list comprehensions write to the loop variable, but generators don't? that List comprehensions also "leak" their loop variable into the surrounding scope . Python 2.7.6 (default, Jun 22 2015, 17:58:13) >>> x = 'before' >>> a = [x for x in (1, 2, 3)] >>> x 3 This bug is fixed in Python3. Python 3.4.3 (default, Oct 14 2015, 20:28:29) >>> x = 'before' >>> a = [x for x in (1, 2, 3)] >>> x 'before' What is the best way to make Python2 be compatible with Python3 at this