jiafu questions

• when the code throw many exception and the handle is same, which choice is better?
• Why can write expressions like string s = "xxx" in C++?
• error: conversion from 'const char [5]' to non-scalar type in c++
• When to use and the differences between clog and cerr in c++ [duplicate]
• what's the "#define XXX" 's value?
• why can't print twice deconstruct for this C++ code sample?
• (@Context HttpServletResponse response not work in resteasy
• Why can't -O0 disable gcc compile optimization?
• in production code, what's the log level when failing to validate request parameters or format
• How do I disable Unused Variable warnings in Eclipse in minGW?

jiafu answers