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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...ere.
}
Note that typeof always returns a string, and doesn't generate an error if the variable doesn't exist at all.
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Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
...so try ssh-keygen -t rsa -C "your_email@youremail.com" if still having the error, to create another file.pub and use that one in the recommended command in this answer
– Tom Roggero
Oct 23 '12 at 4:01
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This IP, site or mobile application is not authorized to use this API key
...find the latitude and longitude of any address, when I'm trying I find the error as
13 Answers
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How to use double or single brackets, parentheses, curly braces
... typically iterated over in loops:
$ echo f{oo,ee,a}d
food feed fad
$ mv error.log{,.OLD}
(error.log is renamed to error.log.OLD because the brace expression
expands to "mv error.log error.log.OLD")
$ for num in {000..2}; do echo "$num"; done
000
001
002
$ echo {00..8..2}
00 02 04 06 08
$ echo ...
YouTube iframe API: how do I control an iframe player that's already in the HTML?
...doesn't work!
A: "Doesn't work" is not a clear description. Do you get any error messages? Please show the relevant code.
Q: playVideo does not play the video.
A: Playback requires user interaction, and the presence of allow="autoplay" on the iframe. See https://developers.google.com/web/updates/20...
How can I get current location from user in iOS
...GeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error)
{
if (!(error))
{
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(@"\nCurrent Location Detected\n");
NSLog(@"placemark %@",placemark);
...
How can I use interface as a C# generic type constraint?
... A static constructor can't be public, so this should give a compile-time error. Also your static class contains an instance method, that's a compile-time error as well.
– Jeppe Stig Nielsen
Aug 19 '13 at 10:16
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how to display full stored procedure code?
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ERROR: more than one function named
– Brian Cannard
Oct 3 '17 at 16:45
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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
...erver heroku logs run that from the console and it will tell you the exact error.
When you push to heroku you need to configure the environment.rb file with the heroku subdomain:
config.action_mailer.default_url_options = { :host => 'yourapp.heroku.com' }
Depending upon version, this should...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...eplacement table foo, then the blocked transaction will finally receive an error rather than finding the new foo table. (Edit: this was fixed in or before PostgreSQL 9.3)
CREATE INDEX ... CONCURRENTLY is exceptional, it uses three transactions to add an index to a table while allowing concurrent up...