
已解决 ImportError:/opt/ros/kinetic/lib/python2.7/dist-packages/cv2.so:undefined symbol:PyCobject Type。
操作系统:Ubuntu,版本号为16.04 问题描述 由于ubuntu16.04系统中安装了ROS,导致Anaconda安装opencv-python后使用python导入cv2时出现的错误:ImportError: /opt/ros/kinetic/lib/python2.7/dist-packages/cv2.so: undefined symbol: PyCobject Type; ...

The method getServletContext() is undefined for the type HttpServletRequest
2016-10-11这个问题也挺奇怪的,我记得以前都是这么写://获取服务器的路径 String dirPath = request.getServletContext().getRealPath("/");今天,这段代码竟然报错了,说这个方法未定义,我TM也是无语了。原来,高版本的servlet已经不支持这个方法了。代替方案为:String dirPath = request.getSessi....
../../..xxx.go:46:18: aa.Bbb undefined (type *"xx/xxx/xx".Ccc has no field or method Bbb)
golang 程序编译时突然报这个错../../..xxx.go:46:18: aa.Bbb undefined (type *"xx/xxx/xx".Ccc has no field or method Bbb)找到 xxx.go 文件的第 46 行(18是列号),aa.Bbb 当前应该是处于标红未定义的状态,排查为啥 Bbb 未定义即可。
如何解决提示the operation % is undefined for the argument type string,int的错误
今天在做一个用三元运算符判断奇偶的小练习时遇到“the operation % is undefined for the argument type string,int”错误的小插曲 开始的程序是这样写的 1 2 3 4 5 6 7 8 9 10 11 package com.lixiyu; import java.util.Scanner; public clas...
The method getResources() is undefined for the type
在非activity的独立类(public class readwhatsapp)中调用getResources()时(InputStream is = getResources().openRawResource(R.raw.wa_contacts.db)),出现The method getResources() is undefined for the type 这是因为 getRe...
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