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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...rsion 1.9.4. Maybe this was fixed in a recent version.
Also, I suggest the setorder(DT, -x) syntax in keeping with the set* commands like setnames, setkey
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Sourcetree - undo unpushed commits
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Right click on the commit you like to reset to (not the one you like to delete!)
Select "Reset master to this commit"
Select "Soft" reset.
A soft reset will keep your local changes.
Source: https://answers.atlassian.com/questions/153791/how-should-i-remove-push-...
Cleanest way to write retry logic?
... <= 0 because this will go on forever if you want to disable retries by setting it to 0. Technically the term retryCount isn't a really good name, because it won't retry if you set it to 1. either rename it to tryCount or put the -- behind.
– Stefanvds
May 3...
How to make div background color transparent in CSS
...From https://developer.mozilla.org/en-US/docs/Web/CSS/background-color
To set background color:
/* Hexadecimal value with color and 100% transparency*/
background-color: #11ffee00; /* Fully transparent */
/* Special keyword values */
background-color: transparent;
/* HSL value with color and 10...
Cocoa Core Data efficient way to count entities
...xt *moc
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:[NSEntityDescription entityForName:entityName inManagedObjectContext:moc]];
[request setIncludesSubentities:NO]; //Omit subentities. Default is YES (i.e. include subentities)
NSError *err;
NSUInteger count = [moc ...
Where does PHP's error log reside in XAMPP?
...re xampp is your installation folder.
If you haven't changed the error_log setting in PHP (check with phpinfo()), it will be logged to the Apache log.
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Do event handlers stop garbage collection from occurring?
...other class, the instance of that class might not be cleared if you do not set pClass to null.
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How to simulate Android killing my process
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Alternatively you could go to "Development options" and set background limit to "no background processes" then every time you press home the process will die.
– Joao Gavazzi
Jun 2 '16 at 5:33
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How do you remove the root CA certificate that fiddler installs
...; Fiddler Options -> HTTPS. Then click the "Actions" button and then "Reset All Certificates"
It will popup a message that it could take a while but it's really quick. Approve all popups and there you go.
Pay attention not to re-approve the certificate again (when I did it the message for approvi...
How to negate the whole regex?
...AND the .* at the end are both critical bits. As always with REs, a strong set of unit tests is absolutely critical to getting it right. This answer is 100% correct.
– Tom Dibble
Aug 7 '18 at 19:30
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