Why I can match the wechall3? Go to the Training: Regex challenge
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Why I can match the wechall3?
Mai 15, 2017 - 06:01:49 (6y 350d)
Mai 15, 2017 - 06:01:49 (6y 350d)
This is my re:
/^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....
Why I can match the wechall3.png.
I think that I only match the wechall or wechall4?
Where is wrong?
Thanks a lot....
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RE: Why I can match the wechall3?
Mai 15, 2017 - 08:07:33 (6y 350d)
Mai 15, 2017 - 08:07:33 (6y 350d)
Think about where the alternatives in your expressions begin and end (and how the matching algorithm would know this).
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