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Regex to check whether a string contains only numbers [duplicate]

I get false on both "123" and "123f" . I would like to check if the hash only contains numbers. Did I miss something? 21...
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How do I programmatically determine operating system in Java?

... 638 You can use: System.getProperty("os.name") P.S. You may find this code useful: class ShowPr...
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Can you attach a UIGestureRecognizer to multiple views?

... 338 A UIGestureRecognizer is to be used with a single view. I agree the documentation is spotty. ...
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How can I get a web site's favicon?

... 238 You'll want to tackle this a few ways: Look for the favicon.ico at the root of the domain ww...
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How to post data in PHP using file_get_contents?

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How to create unit tests easily in eclipse [closed]

... | edited Feb 27 '17 at 3:43 answered Mar 1 '11 at 7:39 f...
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How to exit git log or git diff [duplicate]

... 1436 You're in the less program, which makes the output of git log scrollable. Type q to exit this ...
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Error when trying vagrant up

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Center Oversized Image in Div

... 370 Try something like this. This should center any huge element in the middle vertically and hori...
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Send inline image in email

... Has Sent You A Screenshot"; mail.Body = String.Format( "<h3>Client: " + data.client_id + " Has Sent You A Screenshot</h3>" + @"<img src=""cid:{0}"" />", att.ContentId); mail.IsBodyHtml = true; mail.Attachments.Add(att); ...