compatibility

问题 This question tells me how to check the version of Python. For my package I require at least Python 3.3: MIN_VERSION_INFO = 3, 3 import sys if not sys.version_info >= MIN_VERSION_INFO: exit("Python {}.{}+ is required.".format(*MIN_VERSION_INFO)) but where/when should this check occur? I want to produce the clearest possible error message for users installing via pip (sdist and wheel) or python setup.py install . Something like: $ pip -V pip x.x.x from ... (Python 3.2) $ pip install MyPackage

问题 I use webapp2 with python 2.7 with or without googleAppEngine. I'm now trying to use it with Python 3.3 I've used PIP to install webapp2 Install run with success but when I try to import webapp2 from IDLE gaves me the folowing error: File "<pyshell#0>", line 1, in <module> import webapp2 File "C:\Python3\lib\webapp2.py", line 571 except Exception, e: ^ I suspect it's a thing that must be updated in order to work with Python3... ?anybody done this already or should I wait for an updated

问题 I have a problem with a Data Model using Core Data. 1/ I've created a data model on xcode 4.1 (on lion) with my entities and their relationships. In the inspector on the right i've checked "Tools version" : Minimum : Xcode 3.2 instead of Xcode 4.1. 2/ When i try to reopen my project, in Xcode 3.2.5 (on snow leopard), I click on "mydatamodel.xcdatamodeld", then on "mydatamodel.xcdatamodel", but nothing happen ! It's like my xcdatamodel file was empty but it's a 4.9 Mo file ! My xcdatamodel

问题 I know the general answer to "How should I indent my code" is generally "do as you wish but do it the same way as everyone on your team", but in the last time I've seen many projects and platforms relying on a 2-space indentation . I just want to make sure I get the "best bang for my buck" when indenting and make sure it's future-proof. Changing the structure in a project later on is a pretty big problem considering compatibility, etc. Most projects now rely on 2 Spaces , 4 Spaces or Tabs .

问题 I am working with the FormData object, while my code works well on Chrome, Microsoft Edge spits out the following error message Object doesn't support property or method 'entries' – which corresponds to the following code: for(let pair of formData.entries()) { ... } I've tried replacing .entries() with .getAll() , however Microsoft Edge doesn't recognize either of both methods. Is there a way to get this functionality (iterating over FormData files) out of Microsoft Edge? FormData Microsoft

问题 I am attempting to make an application capable of running on both Sql Server and PostgreSQL. I can not seem to find a common expression that is basically select * from table where booleancol=false on SQL Server I must do(which is very confusing because the default value for bit types must be true or false, but you can't assign them to true or false or test against it) select * from table where booleancol=0 on PostgreSQL I must do select * from table where booleancol is false There are quite a

问题 I'd like my app to run on both Android versions 2.1 and 2.2. In one area of my app, there is a portrait-style camera - the process for producing a portrait camera preview is different (as far as I know) on the two OS versions. Here is how: 2.1: Camera.Parameters parameters = camera.getParameters(); parameters.set("orientation", "portrait"); camera.setParameters(parameters); 2.2: camera.setDisplayOrientation(90); the setDisplayOrientation(int) method became available in API Level 8 (2.2) and,

问题 On iOS 6 devices like the iPhone and iPad, as well as the latest Mac's, a link to maps.apple.com/maps?q=cupertino is opened in Apple's native mapping application. On non-Mac computers and other devices, it leads to maps.google.com/maps?q=cupertino instead. This is a welcome functionality for developers, however, is Apple's API supported by Google Maps? In other words, do all of the following Apple Maps parameters translate perfectly to something in Google Maps on the web? q= The query

问题 I have found that the C99 standard have a statement which denies the compatibility between the type char and the type signed char/unsigned char. Note 35 of C99 standard: CHAR_MIN, defined in limits.h, will have one of the values 0 or SCHAR_MIN, and this can be used to distinguish the two options. Irrespective of the choice made, char is a separate type from the other two and is not compatible with either. My question is that why does the committee deny the compatibility? What is the rationale

问题 Although I have a ton of people referencing to similar compatibility issues, 50% their problems are solved on StackOverflow. I am hoping my question will make it 51-49 :) Consider this code: <html> <head> <title>Hello, world!</title> <link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" /> <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.0/themes/base/jquery-ui.css" /> <script src="http://code.jquery.com/jquery-1.8.2.min.js"></script> <script