Lua学习教程之 捕获异常(tryCatch封装)

local fun=function ( ... )
	local a=1;
	print(a+1);
	return a+1;
end

tryCatch=function(fun)
	local ret,errMessage=pcall(fun);
	print("ret:" .. (ret and "true" or "false" )  .. " \nerrMessage:" .. (errMessage or "null"));
end

xTryCatchGetErrorInfo=function()
	print(debug.traceback());
end
xTryCatch=function(fun)
	local ret,errMessage=xpcall(fun,xTryCatchGetErrorInfo);
	print("ret:" .. (ret and "true" or "false" )  .. " \nerrMessage:" .. (errMessage or "null"));
end

print("\n------A------\n")
tryCatch(fun);

print("\n------B------\n")

xTryCatch(fun);
print("\n------C------\n")