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Change key pair for ec2 instance
...6yegor256
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7
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Check if a JavaScript string is a URL
...+[a-z]{2,}|'+ // domain name
'((\\d{1,3}\\.){3}\\d{1,3}))'+ // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}
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ASP.NET MVC Html.ValidationSummary(true) does not display model errors
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324
I believe the way the ValidationSummary flag works is it will only display ModelErrors for strin...
Redirect website after certain amount of time
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answered Jul 20 '10 at 16:14
Darin DimitrovDarin Dimitrov
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Provisioning Profiles menu item missing from Xcode 5
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604
These settings have now moved to Preferences > Accounts:
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How do I create a URL shortener?
...ou just do a reverse lookup in your alphabet.
e9a62 will be resolved to "4th, 61st, and 0th letter in the alphabet".
e9a62 = [4,61,0] = 4×622 + 61×621 + 0×620 = 1915810
Now find your database-record with WHERE id = 19158 and do the redirect.
Example implementations (provided by commenters)
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Creating an R dataframe row-by-row
...de in R.
If you can, allocate your entire data.frame up front:
N <- 1e4 # total number of rows to preallocate--possibly an overestimate
DF <- data.frame(num=rep(NA, N), txt=rep("", N), # as many cols as you need
stringsAsFactors=FALSE) # you don't know levels yet...
if A vs if A is not None:
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answered Oct 19 '11 at 4:09
Greg HewgillGreg Hewgill
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How do I convert an NSString value to NSData?
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1422
NSString* str = @"teststring";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
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Importing a Maven project into Eclipse from Git
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Maarten Bodewes
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answered Sep 1 '11 at 11:56
Sri SankaranSr...