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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?
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How do I programmatically determine operating system in Java?
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638
You can use:
System.getProperty("os.name")
P.S. You may find this code useful:
class ShowPr...
Can you attach a UIGestureRecognizer to multiple views?
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338
A UIGestureRecognizer is to be used with a single view. I agree the documentation is spotty. ...
How can I get a web site's favicon?
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238
You'll want to tackle this a few ways:
Look for the favicon.ico at the root of the domain
ww...
Get the date (a day before current time) in Bash
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263
if you have GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
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What does the C++ standard state the size of int, long type to be?
...e of basic C++ types.
I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler.
24 Answers
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Center Oversized Image in Div
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370
Try something like this. This should center any huge element in the middle vertically and hori...
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);
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Selecting only numeric columns from a data frame
...se x[, 1, drop=FALSE] .
– Marek
May 3 '11 at 11:46
Any way to select continuous data only? This method returns continu...
Is there a stopwatch in Java?
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edited May 23 '17 at 11:33
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answered Nov 24 '11 at 10:44
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