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Convert List to List
While we can inherit from base class/interface, why can't we declare a List<>
using same class/interface?
11 Ans...
Is 'float a = 3.0;' a correct statement?
... Deduce double
bar(42.0f); // Deduce float
return 0;
}
Live demo
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Resumable downloads when using PHP to send the file?
...d in comments below have been incorporated.
A tested, working solution (based heavily on Theo's answer above) which deals with resumable downloads, in a set of a few standalone tools. This code requires PHP 5.4 or later.
This solution can still only cope with one range per request, but under any...
How can I handle time zones in my webapp?
...iguously used. This looks like a reference: en.wikipedia.org/wiki/Tz_database From what I can tell a "timezone" is "Area/Location", e.g. "America/New_York". That appears to be geographic which is great because for instance America/Los_Angeles means BOTH PST and PDT depending on whether the globe...
Efficiently updating database using SQLAlchemy ORM
...on. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session.
So if you say
for c in session.query(Stuff).all():
c.foo = c.fo...
How to use single storyboard uiviewcontroller for multiple subclass
...e the UI elements in a UIView - in a xib file and instantiate it from your base class and add it as a sub view in the main view, typically self.view. Then you would simply use the storyboard layout with basically blank view controllers holding their place in the storyboard but with the correct view ...
Random data in Unit Tests?
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I will say though that if you use a random variable then fork your test based on that variable, then that is a smell.
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How to avoid explicit 'self' in Python?
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One extreme example: you can write a class without any knowledge of what base classes it might have, and always know whether you are accessing a member or not:
class A(some_function()):
def f(self):
self.member = 42
self.method()
That's the complete code! (some_function returns the t...
How can I open a link in a new window?
...ing solution to this issue. I was creating spans which contain information based on the return from a web service. I thought about trying to put a link around the span so that if I clicked on it, the "a" would capture the click.
But I was trying to capture the click with the span... so I thought wh...
What are “named tuples” in Python?
...ctions, only fields with them. You can even use your named tuple types as base classes:
class Point(namedtuple('Point', 'x y')):
[...]
However, as with tuples, attributes in named tuples are immutable:
>>> Point = namedtuple('Point', 'x y')
>>> pt1 = Point(1.0, 5.0)
>&g...