这是我的vietnam2015数据:1 2015 0-4 77533 2015= "5-9") %>% # Somehow this weird value creeped into the data frame, is therefor filtered out.= Age.group, y = Est.pop)) +
我很难理解AngularJS中的指令。AngularJS本身的定义充其量也是令人困惑的:
Directives are a way to teach HTML new tricks.有没有人能用简单易懂的英语解释一下AngularJS中的指令,这是编程教学中常用的。类似于:directives are funcions/objects that extends ...