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How many Activities vs Fragments?
...ycle and Intent passing. This also allows the framework to handle all the animations and the back-stack.
To help reduce the code you can use a BaseActivity and extend from that.
So if the user has a tablet you would use MyMultiPaneFragActivity or something similar. This activity is responsible f...
Override devise registrations controller
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A better and more organized way of overriding Devise controllers and views using namespaces:
Create the following folders:
app/controllers/my_devise
app/views/my_devise
Put all controllers that you want to override into app/controllers/my_de...
How to resize superview to fit all subviews with autolayout?
My understanding of autolayout is that it takes the size of superview and base on constrains and intrinsic sizes it calculates positions of subviews.
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Python (and Python C API): __new__ versus __init__
...tually thought about the application of the concept rather than just the meaning of it. Here's an example that would hopefully make the difference clear:
a = Shape(sides=3, base=2, height=12)
b = Shape(sides=4, length=2)
print(a.area())
print(b.area())
# I want `a` and `b` to be an instances of ei...
Why should hash functions use a prime number modulus?
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@DanielMcLaury Joshua Bloch explained why for Java - it was recommended in two popular books (K&R, Dragon book) and performed well with low collisions on the English dictionary. It is fast (uses Horner's method). Apparently...
Truly understanding the difference between procedural and functional
... programs typically describe what will happen, instead of the specific mechanism of how it will happen - this is powerful because if we can clearly state what "Select" and "Where" and "Aggregate" means, we are free to swap out their implementations, just like we do with AsParallel() and suddenly our...
How can I provide multiple conditions for data trigger in WPF?
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THIS ANSWER IS FOR ANIMATIONS ONLY
If you wanna implement the AND logic, you should use MultiTrigger, here is an example:
Suppose we want to do some actions if the property Text="" (empty string) AND IsKeyboardFocused="False", then your code sh...
Using Java 8's Optional with Stream::flatMap
The new Java 8 stream framework and friends make for some very concise java code, but I have come across a seemingly-simple situation that is tricky to do concisely.
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Why hasn't functional programming taken over yet?
I've read some texts about declarative/functional programming (languages), tried out Haskell as well as written one myself. From what I've seen, functional programming has several advantages over the classical imperative style:
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MySQL foreign key constraints, cascade delete
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Hello @Hammerite, can you please tell me what is the meaning of KEY pkey (product_id), in the third CREATE TABLE query in accepted answer?
– Siraj Alam
Jun 3 '18 at 7:51
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