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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...
Why does string::compare return an int?
.... In practice, there
are very few cases where this makes a difference, at least on
2's complements machines where integer arithmetic wraps (i.e.
all but a very few exotics, today—I think the Unisys
mainframes are the only exceptions left). Still, even on the
more common machines:
short a = 1;
s...
Rails ActionMailer - format sender and recipient name/email address
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Another irritating aspect, at least with the new AR format, is to remember that 'default' is called on the class level. Referencing routines that are instance-only causes it to silently fail and give when you try to use it:
NoMethodError: undefined met...
Can Python test the membership of multiple values in a list?
...he Upshot
Most of the time, converting container to a set is worth it, at least if all its elements are hashable. That's because in for sets is O(1), while in for sequences is O(n).
On the other hand, using subset testing is probably only worth it sometimes. Definitely do it if your test items ar...
Why return NotImplemented instead of raising NotImplementedError
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>> "magnified by the size of the list" At least, unless you have an O(n) sort the world ought to know about.
– Jonathan Hartley
Feb 6 '14 at 12:37
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How do you get the footer to stay at the bottom of a Web page?
...ooter = 120px */
}
Which means: let the height of the content div be at least 100% of the viewport height minus the combined heights of the header and footer.
That's it.
* {
margin:0;
padding:0;
}
header {
background: yellow;
height: 80px;
}
.content {
min-heigh...
Is it possible to make a Tree View with Angular?
...n identical version (I think), except that it loads much faster (for me at least), since it doesn't have Twitter Bootstrap inlined in the CSS section. jsfiddle.net/brendanowen/uXbn6/8
– KajMagnus
Oct 24 '12 at 10:54
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How do I accomplish an if/else in mustache.js?
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@boxed you can do for loop with moustache.js (at least ngFor-ish loop)
– aloisdg moving to codidact.com
Jun 22 '18 at 8:26
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How to get the parents of a Python class?
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You can also just use cls.__mro__ (at least in Python 3.5)
– naught101
Jan 16 '17 at 22:27
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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 '...