backport

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I want to port a web application scanning framework from Python 2.6.5-2.7.3 to Python 3 without causing much harm to the compatibility with Python 2.6+ . I have read briefly about six: Python 2 and 3 Compatibility Library and python-modernize . The framework I am intending to port

问题 We've been developing a windows based application using Java for a while now, but NOW we want to make a mac port and have to reverse of code from Java 6 and Java 5. Is there any easy way to do this rather than re-coding Java 6 specific code? We'd like to keep our code up to date. 回答1: There are a couple of libraries out there which can help you. Unfortunately I haven't tried them myself, because I've never run into such a situation. Retroweaver Retrotransaltor backport-jsr166 回答2: See here:

问题 Angular 1.3 introduced a new debugInfoEnabled() method that can provide a boost in performance if called with false in the application config function: myApp.config(['$compileProvider', function ($compileProvider) { $compileProvider.debugInfoEnabled(false); }]); Also, Angular 1.3 dropped IE8 support. And this is a problem for me, my application have to run on IE8. Hence, I cannot upgrade to angular 1.3 and have to live with 1.2. Is there a way to achieve the same functionality with angular 1

问题 Reading about what kind of bytecode Java 8 produces from lambdas, it came to my mind the time when Java 5 was released. Back then there was Retroweaver and other tools for converting bytecode compiled with JDK 5 to run on JRE 1.4. Has anybody yet created such a backporting tool for Java 8 lambdas? It would let Java developers start using lambdas already today on production-quality Java 7 JREs, without having to wait 6-12 months for Java 8's GA release. Here is my analysis of why such as

问题 Reading about what kind of bytecode Java 8 produces from lambdas, it came to my mind the time when Java 5 was released. Back then there was Retroweaver and other tools for converting bytecode compiled with JDK 5 to run on JRE 1.4. Has anybody yet created such a backporting tool for Java 8 lambdas? It would let Java developers start using lambdas already today on production-quality Java 7 JREs, without having to wait 6-12 months for Java 8's GA release. Here is my analysis of why such as

问题 I'd like to use with statement in Python 2.5 in some production code. It was backported, should I expect any problems (e.g. with availability/compatibility on other machines/etc)? Is this code from __future__ import with_statement compatible with Python 2.6? 回答1: with_statement wasn't back ported but implemented in Python 2.5. Adding new keywords or syntax can break existing applications. With Python the way they decided to handle this is allow people to opt-in to those features early so you

问题 I developed a java application with netbeans. It used jdk 1.6. It works fine. But now the requirement is I need to build the jar for the application from the .java files in another machine without netbeans and where jdk 1.5 is used. I cannot upgrade that machine to jdk 1.6. Is there any way I could make my java files compile and work in jdk 1.5 machine with a possible minimal change to my source code.. The error is javax.swing.grouplayout not available in jdk 1.5 Please help... 回答1: Use the

问题 We are stuck with Java2SE v1.4 till the end of 2010. That's really nasty, but we can't help it. What options do we have to use some of the new features already now? I can think of several ways like changing the bytecode, e.g. using Retrotranslator or Retroweaver. backport of libraries, e.g. Concurrent Backport, but this does not help for generics. emulation of Java 5 features, e.g. checked Collections, Varargs with helper methods, etc. changing source code by precompilation, stripping all 1.5

问题 I'm looking for a way to do this without checking for the Python version used. Please refer to How to write exception reraising code that's compatible with both Python 2 and Python 3? for details about this, since this question extends that one. Basically, I can generalize this as, "What if the method-based exception raises a language-based exception?" According to Python try...except comma vs 'as' in except, the following show the right syntax for Python 3 and Python 2: Python 3: except

问题 Suppose that there is a project that uses Qt, and depends on the features (e.g. added class members) present in a new version of Qt. The project is meant to be built with a "system"/distribution version of Qt that may be older than the version the project depends on. The naive approach results in the preprocessor hell: void Class::foo() { #if QT_VERSION >= QT_VERSION_CHECK(...) QClass::newFangled(); #else QClass::oldFangled1(); blurble(); #endif } Is there a cleaner approach that won't depend