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Create a GUID in Java
...erate many millions of such values in your app and still sleep well. Using one of the other variants further reduces the possibility of collisions even closer to zero because of using "space and time", [1] MAC address or name, and [2] current date-time, as constraints.
– Basil ...
Creating an R dataframe row-by-row
I would like to construct a dataframe row-by-row in R. I've done some searching, and all I came up with is the suggestion to create an empty list, keep a list index scalar, then each time add to the list a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list...
How to convert array values to lowercase in PHP?
...);
}
return $array;
}
$arrays = array ( 1 => 'ONE', 2=> 'TWO', 3 => 'THREE',
'FOUR' => array ('a' => 'Ahmed', 'b' => 'basem',
'c' => 'Continue'),
5=> 'FIVE',
array(...
How to intercept touches events on a MKMapView or UIWebView objects?
...
This is perfect solution. I need one clarification: In the method "- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event", what is the purpose of using the code: if (touchesBeganCallback) touchesBeganCallback(touches, event);
...
Using Sinatra for larger projects via multiple files
...s are being written into a single file, if I understand right it acts as a one large/small controller. Is there any way to split it into separate independent files, so when let's say somebody calls "/" - one action is executed, and if smth like "/posts/2" is received then another action - similar lo...
How to convert an iterator to a stream?
...
One way is to create a Spliterator from the Iterator and use that as a basis for your stream:
Iterator<String> sourceIterator = Arrays.asList("A", "B", "C").iterator();
Stream<String> targetStream = StreamSupport....
How to deploy an ASP.NET Application with zero downtime
...t it services existing sessions for a given server, but doesn't accept new ones. That allows you to avoid dropping sessions. This technique however requires waiting for the sessions to end, and in general you'll want to script this.
– user41871
Oct 7 '09 at 4:1...
How do you test private methods with NUnit?
...testing is not about the class, it's about the code. If I had a class with one public method, and ten private ones used to create the result of the public one, I have no way of ensuring each private method works in the intended way. I could try to create test cases on the public method that hit the ...
What are some better ways to avoid the do-while(0); hack in C++?
...ot allow local function defintions, you'll have to move that function (the one you're gonna return from) somewhere else, which reduces readability. It might end up with dozens of parameters, then, because having dozens of parameters is a bad thing, you'll decide to wrap them into struct, which will ...
Set up DNS based URL forwarding in Amazon Route53 [closed]
...e/ .
This guide will teach you set up URL forwarding to any URL, not just ones from Amazon. You will learn how to set up forwarding to specific folders (like "/console" in my example), and how to change the protocol of the redirect from HTTP to HTTPS (or vice versa).
Step One: Create Your S3 Buc...