从String中提取Hashtags

Question

假设我有一个带有一些主题标签的段落，我想将它们复制出来并单独显示它们。这是一些虚拟文本：

  

可视化如何启用#vertical #architectures？无论何时你   可以，解除垂直#convergence？ #Visualize你怎么样   e-enable #vertical架构？无论何时，只要中断   垂直#convergence？

我想在我的模板上提供主题标签：#convergence，＃Visualize，#vertical。

Answer 1

str = "Visualize how you can e-enable #vertical #architectures?..."
str.scan(/#\w+/).flatten #=> ["#vertical", "#architectures", "#convergence",...]

Answer 2

使用正则表达式，

input = 'Visualize how you can e-enable #vertical #architectures? Whenever you can, disintermediate vertical #convergence? #Visualize how you can e-enable #vertical architectures? Whenever you can, disintermediate vertical #convergence?'
input.scan(/#(\w+)/)

会帮你的

[["vertical"], ["architectures"], ["convergence"], ["Visualize"], ["vertical"], ["convergence"]]