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How to define optional methods in Swift protocol?
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Advantages
No Objective-C runtime is involved (well, no explicitly at least). This means you can conform structs, enums and non-NSObject classes to it. Also, this means you can take advantage of powerful generics system.
You can always be sure that all requirements are met when encountering typ...
How to increase font size in a plot in R?
...fault!!! You need to use cex=2/3 to get the default font size. At the very least, this is the case under R 3.0.2 for Mac OS X, using PDF output.
You can change the default font size for PDF output using pointsize in pdf().
I suppose it would be far too logical to expect R to (a) actually do what i...
What is the difference between trie and radix trie data structures?
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This diagram, retrieved from Wikipedia, seems to depict a trie with (at least) the keys 'A', 'to', 'tea', 'ted', 'ten' and 'inn' inserted:
If this trie were to store items for the keys 't', 'te', 'i' or 'in' there would need to be extra information present at each node to distinguish between n...
CSS center text (horizontally and vertically) inside a div block
...ght: 0;
margin-top: -9px;
}
Approach 5 - The line-height method (Least flexible - not suggested):
Example Here
In some cases, the parent element will have a fixed height. For vertical centering, all you have to do is set a line-height value on the child element equal to the fixed height ...
How could I use requests in asyncio?
...truly ancient SOAP interface, and I'm using the suds-jurko library as the "least bad" solution. I'm trying to integrate it with an asyncio server, so I'm using run_in_executor to make the blocking suds calls in a way that looks asynchronous.
– Lucretiel
Apr 6 '...
Interview question: Check if one string is a rotation of other string [closed]
... be, "Well, I'd ask the stackoverflow community and would probably have at least 4 really good answers within 5 minutes". Brains are good and all, but I'd place a higher value on someone who knows how to work with others to get a solution.
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How to return multiple lines JSX in another return statement in React?
...or div didn't work well for me. The div seriously broke rendering, and, at least in my use case, the span messed up the CSS. 2¢: Trying to return several subsets of lis is a code smell. We were using a ul as a sort of pull-down menu, and I initially wanted many components to return "sections" of li...
How can I check if character in a string is a letter? (Python)
...Return true if all characters in the string are alphabetic and there is at least one character, false otherwise. Alphabetic characters are those characters defined in the Unicode character database as “Letter”, i.e., those with general category property being one of “Lm”, “Lt”, “Lu”,...
Where is Erlang used and why? [closed]
...lt from ground up for the telco environment requiring that systems meet at least 5x9's availability (99.999% yearly up-time). This figure doesn't leave much room for downtime during a year! For this reason primarily, Erlang comes loaded with the following features (non-exhaustive):
Horizontal sca...
Difference between “!==” and “==!” [closed]
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@Gerald Schneider: The least you could do to make up for it was to improve this answer so that it was at least on par with the other answers in terms of grammar and formatting (one of which you specifically called out for its very detailed explanat...