ruby - how to remove all [d+] except the last [d+]? -

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मेरे पास एक स्ट्रिंग है जैसे 

  / root / children [2] / header [1 ] / कुछ / कुछ [4] / टेबल / ट्र [1] / लिंक / ए / बी   
 और  
  / मूल / बच्चों [2] / हेडडर [1] / कुछ / कुछ [4] / टेबल / ट्र [2]  
 
 मैं स्ट्रिंग कैसे पुन: उत्पन्न कर सकता हूं ताकि सभी  / \ [\ d + \] /  [?  
 
 को छोड़कर /  को हटा दिया जाता है, इसलिए मुझे इसका अंत होना चाहिए। 
 
  / रूट / बच्चों / हेडर / कुछ / कुछ / टेबल / ट्र [1] / लिंक / ए / बी  
 
 और 
 
  / मूल / बच्चों / हेडर / कुछ / कुछ / टेबल / ट्र [2]

आपके लिए कोई छोर नहीं है । एक लेटरहाइड अटेटिशन (? = ...) का प्रयोग करें: 

  s.gsub (/ \ [\ d + \] (? =। * \ [) /, "")

बहुत उपयोगी लुकअराउंड ऑपरेटरों का एक उचित स्पष्टीकरण है


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