redefine

I have a mem_malloc() and mem_free() defined for me and I want to use them to replace the malloc() and free() and consequently C++'s new and delete. I define them as follows: extern "C" { extern void *mem_malloc(size_t); extern void mem_free(void *); void * malloc(size_t size) { return mem_malloc(size); } void free(void *memory) { mem_free(memory); } } However, I get two link errors: [user@machine test]$ g++ -m32 -pthread main.cpp -static libmemnmf-O.a /usr/lib/../lib/libc.a(malloc.o): In function `free': (.text+0x153c): multiple definition of `free' /tmp/ccD2Mgln.o:main.cpp:(.text+0x842):

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a website on Backbone. When I try to execute Disqus code i get Uncaught TypeError: Cannot read property 'appendChild' of null How can I fix it? Why is this happening? var disqus_shortname = 'mysite'; /* * * DON'T EDIT BELOW THIS LINE * * */ (function() { var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true; dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); })(); console: undefined

I tried to modify and redefine a function (xcmsRaw) in R package xcms by first defining a function my.xcmsRaw <- function(filename, profstep = 1, profmethod = "bin", profparam = list(mzcorrf=1), # PATCH - mzcorrf is the m/z correction factor, e.g. 0.99888 for long-chain hydrocarbons includeMSn = FALSE, mslevel=NULL, scanrange=NULL) { ... } and then typing unlockBinding("xcmsRaw", as.environment("package:xcms")) assign("xcmsRaw", my.xcmsRaw, as.environment("package:xcms")) lockBinding("xcmsRaw", as.environment("package:xcms")) However, when I run it it gives me the error Error in get(as

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Must I need to redefine all the overloading operators with derived type if I require to use them in derived class? The following code compiles fine: class Point { public: Point(int X = 0, int Y = 0):x(X), y(Y) {} virtual ~Point() {} Point operator +(Point &rhs) { return Point(x + rhs.x, y + rhs.y); } protected: int x, y; }; class Vector : public Point { public: Vector(int X, int Y) : Point(X, Y) {} ~Vector() {} Vector operator +(Vector &rhs) { return Vector(x + rhs.x, y + rhs.y); } }; int main() { Vector v1(1, 2); Vector v2(3, 2); Vector v3

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am getting a "binding shadows the existing binding" error similar to the one from this question. Prelude Api.Facility Control.Monad.IO.Class> let t = getBadgesNot 1 (Nothing) (Just 1) <interactive>:55:5: warning: [-Wname-shadowing] This binding for ‘t’ shadows the existing binding defined at <interactive>:39:5 I defined the existing binding earlier in the session, and am now trying to redefine it. Is there a way to remove the existing binding so that I can redefine t ? I notice that in other circumstances ghci does not error when

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I would like to redefine certain functions in PHP that are already built for example, echo() or time() - I don't need to define these functions globally, just within a single script for testing. I think this can be done in Perl but in PHP - Is this possible? 回答1: runkit_function_redefine ― Replace a function definition with a new implementation Note: By default, only userspace functions may be removed, renamed, or modified. In order to override internal functions, you must enable the runkit.internal_override setting in php.ini. 回答2: You

　　鸽了鸽了，webpack源码大垃圾，看了那么久，感觉自己越来越渣……还是换个口味，node了解一下？ 　　尝试从express框架源码入手，学习一下node的http模块相关的知识。 入口文件 　　先从框架的主文件入手，该JS文件包含三大部分： 1、外部/工具模块引入与属性挂载 2、主函数定义 3、中间件的分离提示 　　 　　首先是第一块，具体的相关代码如下： var bodyParser = require('body-parser') var EventEmitter = require('events').EventEmitter; var mixin = require('merge-descriptors'); var proto = require('./application'); var Route = require('./router/route'); var Router = require('./router'); var req = require('./request'); var res = require('./response'); // 内部模块 exports.application = proto; exports.request = req; exports.response = res; // 构造方法 exports.Route =

I'm running some Ruby code which evals a Ruby file every time its date changes. In the file, I have constant definitions, like Tau = 2 * Pi and, of course, they make the interpreter display the unwanted "already initialized constant" warning every time, so, I'd like to have the following functions: def_if_not_defined(:Tau, 2 * Pi) redef_without_warning(:Tau, 2 * Pi) I could avoid the warning by writing all my constant definitions like this: Tau = 2 * Pi unless defined?(Tau) but it is inelegant and a bit wet (not DRY ). Is there a better way to def_if_not_defined ? And how to redef_without