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WeChall
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Challenge: Training: Regex
Why I can match the wechall3?
Go to the Training: Regex challenge
Level 3
Level4 again
junfengwuhu
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Why I can match the wechall3?
May 15, 2017 - 06:01:49 (7y 129d)
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This is my re:
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/^wechall4?\.tiff|gif|jpg|png|bmp$/
Why I can match the wechall3.png.
I think that I only match the wechall or wechall4?
Where is wrong?
Thanks a lot....
dloser
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RE: Why I can match the wechall3?
May 15, 2017 - 08:07:33 (7y 129d)
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Think about where the alternatives in your expressions begin and end (and how the matching algorithm would know this).
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