调用在轨

Question

多次扫描，说我有以下网址：

url = "https://instagram.com/username/" 

而且我想提取“用户名”。可以扫描3次吗？或者这会变得更慢？

url.scan(/instagram.com\/.+\//).first.scan(/\/.+\//).first.scan(/[^\/]/).first 

Answer 1

你可以尝试这样的事情：

url = "https://instagram.com/username/somewhat/something/" 

url.scan(/https:\/\/instagram.com\/(\w+)\//).first 
# => ["username"] 

Demonstration