NOTE: 1.绝不要返回pointer或reference 指向一个local stack 对象,或返回reference 指向一个heap-allocated对象,或返回pointer 或reference指向一个 local static 对象而有可能同时需要多个这样的对象.…

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[EffectiveC++]item34:区分接口继承和实现继承…

今天去逛论坛 时发现了一个很有趣的问题: 谁能给我我解释一下这段程序的结果为什么是:2.而不是:3 代码如下: class Test { public int aaa() { int x = 1; try { return ++x; } catch (Exception e) { } finally { ++x; } return x; } public static void main(String[] args) { Test t = new Test(); int y = t.aaa();…

public class TryExer { public static void main(String[] args) { String test = test(); System.out.printf("返回:"+test); } public static String test(){ try { System.out.println("try"); return "try"; } catch (Exception e) { System…

语句:iptables -A INPUT -s 134.192.204.235 -p TCP --dport 11211 -j accept 报错:Couldn't load target `accept':/lib64/iptables/libipt_accept.so: cannot open shared object file: No such file or directory 原因:规则语句写错accept应大写ACCEPT 参考:http://www.cnblogs.com/iii…

尝试用android sdk的uiautomatorviewer抓元素的时候报错:Error while obtaining UI hierarchy XML file: com.android.ddmlib.SyncException: Remote object doesn't exist! 解决办法:把连接安卓手机的其他软件关闭(我把自动化停掉) 参考:https://www.cnblogs.com/siyz/p/8135388.html…

If you want to concatenate assignment like this int x, y, z; x = y = z = 15; The convention is to make the assignment operators return a reference to *this. 11 Handle assignmnet to self in operator = You can easily assign an object to itself without…

1.centos6.9安装xampp(xampp-linux-x64-7.0.21-0-installer.run)后启动的时候,报错: egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directoryegrep: error while loading shared libraries: libc.so.6: cannot open…

Linux下登录mysql出错:mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: 执行命令:mysql -u root -p 错误:mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: 分析:缺少 libncurses.so.5…