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Functional design patterns [closed]
...s.
Chapters 11-13 cover Functors, Applicative Functors and Monads, in that order. This is helpful - many tutorials introduce Functors and then Monads, and then tack Applicative Functors on at the end (if they cover it at all). The order in LYAH is better, because moving from Functors => Applicati...
Why would a static nested interface be used in Java?
...
An inner interface has to be static in order to be accessed. The interface isn't associated with instances of the class, but with the class itself, so it would be accessed with Foo.Bar, like so:
public class Baz implements Foo.Bar {
...
}
In most ways, this ...
Sorting a list using Lambda/Linq to objects
...n direction)
{
if (direction == SortDirection.Ascending)
list = list.OrderBy(sorter);
else
list = list.OrderByDescending(sorter);
}
Now you can specify the field to sort when calling the Sort method.
Sort(ref employees, e => e.DOB, SortDirection.Descending);
...
What “things” can be injected into others in Angular.js?
... more on that later) and Angular will call the provider's $get function in order to return a new instance of the service. In this case, the thing that will be injected is a function that takes a name parameter and alerts a message based on the name. We might use it like this:
app.controller('MainCo...
Why are two different concepts both called “heap”?
...
Yes, but a heap also implies disorder and memory heaps are generally disordered. The data structure heap is extremely well ordered. So again there's an equal mismatch going the other way based on the common definition of heap.
– jmucch...
When is JavaScript synchronous?
...ous means one at a time i.e. one line of code is being executed at time in order the code appears. So in JavaScript one thing is happening at a time.
Execution Context
The JavaScript engine interacts with other engines in the browser.
In the JavaScript execution stack there is global context at th...
Webrick as production server vs. Thin or Unicorn?
...rs (Apache, Nginx, etc) can handle without spinning up Ruby*, and probably orders of magnitude faster.
* for example, if you are running behind a load balancer, you could route all rewrite traffic to a server that does not have ruby installed, and let your main servers only manage the primary traff...
Add a prefix to all Flask routes
...prefix.
The mask argument is a `format string` formatted with, in that order:
prefix, route
'''
def newroute(route, *args, **kwargs):
'''New function to prefix the route'''
return route_function(mask.format(prefix, route), *args, **kwargs)
return newroute
Arguably, this is ...
When is it better to use String.Format vs string concatenation?
... several other developers) to remove a parameter, or mess up the parameter order by mistake. The compiler will not check the parameters against the format string and you end up with a runtime error (that is, if you're lucky enough not to have it in an obscure method, such as logging an error). With ...
Python + Django page redirect
...fox 5 'caching' 301 redirects
I had to clear my caches to change it. In order to avoid this head-scratching in the future, I was able to make it temporary like so:
from django.views.generic import RedirectView
url(r'^source$', RedirectView.as_view(permanent=False,
...