forward-compatibility

问题 I have a slightly modified version of the sample code found on the main LWJGL page. It works but it uses legacy OpenGL version 2.1 . If I attempt to use the forward-compatible context described in GLFW doc, the version used is 4.1 (no matter what major/minor I hint), the window is created, but it crashes on the first call to glPushMatrix() . Forward compatibility enabled like so: glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); glfwWindowHint(GLFW

问题 I have a slightly modified version of the sample code found on the main LWJGL page. It works but it uses legacy OpenGL version 2.1 . If I attempt to use the forward-compatible context described in GLFW doc, the version used is 4.1 (no matter what major/minor I hint), the window is created, but it crashes on the first call to glPushMatrix() . Forward compatibility enabled like so: glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); glfwWindowHint(GLFW

来源： https://stackoverflow.com/questions/60421663/is-python-3-semantically-versioned-and-forwards-compatible

问题 I want to install File::Fetch, which is a core module in Perl 5.12, in my Perl 5.8.9. In general, I want to compile and install future-dated modules in my back-dated Perl because I cannot upgrade my Perl. So I downloaded the module and also its dependencies. It's quite painful following the dependency tree but I'm more concerned about the fact that some of them are core modules. If I install these, my Perl 5.8.9 core will have patches from 5.12. My question is how I can know whether I can

问题 It has generally been the case the Java source code has been forward compatible. Until Java 8, as far as I know, both compiled classes and source have been forward compatible with later JDK/JVM releases. [Update: this is not correct, see comments re 'enum', etc, below.] However, with the addition of default methods in Java 8 this appears to no longer be the case. For example, a library I have been using has an implementation of java.util.List which includes a List<V> sort() . This method

问题 Backward binary compatibility (or downward compatibility) - an ability of clients built with an old version of library API to run on a new one (wiki). Upward binary compatibility (or forward compatibility) - an ability of clients built with a new version of library API to run on old one (wiki). The general Sun's document about JDK Incompatibilities in J2SE 5.0 since 1.4.2 (and Java SE 6 compatibility with J2SE 5.0 too) describes the compatibility of JDK as following: JDK 5.0 is upwards binary

问题 When I want to detect IE I use this code: function getInternetExplorerVersion() { var rv = -1; if (navigator.appName == 'Microsoft Internet Explorer') { var ua = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})"); if (re.exec(ua) != null) rv = parseFloat( RegExp.$1 ); } return rv; } function checkVersion() { var msg = "You're not using Internet Explorer."; var ver = getInternetExplorerVersion(); if ( ver > -1 ) { msg = "You are using IE " + ver; } alert( msg ); } But IE11

问题 I'm trying to make an app that displays something in real-world units. It's not a ruler app, but it wants that kind of precision. It already looks like the iPhone and iPod touch have different screen resolutions (160 & 163 respectively) I've found this Calculating pixel size on an iPhone and this iPhone screen resolution changes in future hardware and this http://forums.macrumors.com/showthread.php?t=350612 From my reading it sounds like I can treat the 320 * 480 screen space as 2 * 3.5

问题 I recently set out on an expedition to unit-test a rather complex T4 class. I've arrived at a major breakthough, but I'm afraid the observed behavior may only be coincidental(ie, may break in future versions of Visual Studio) I basically have something like this: MainTemplate.tt: <#@ include file="generator.tt.cs" #> And then in generator.tt.cs I have //<#+ class code { .... } //#> The observed behavior of this is that I can both use the declared classes and such from the T4 template AND

问题 I'm trying to re-raise an exception to give the user better information about the actual error. Python 3.3 includes PEP 409. It adds the raise NewException from None syntax to suppress the context of the original exception. However, I am targeting Python 3.2. The Python script will parse, but at runtime if it encounters the from None syntax it will produce TypeError: exception causes must derive from BaseException . For example: try: regex_c = re.compile('^{}$'.format(regex)) except re.error