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Getting started with Haskell
...ts, but nothing really seems to stick.
Now, in learning various imperative/OO languages (like C, Java, PHP), exercises have been a good way for me to go. But since I don't really know what Haskell is capable of and because there are many new concepts to utilize, I haven't known where to start.
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String slugification in Python
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There is a python package named python-slugify, which does a pretty good job of slugifying:
pip install python-slugify
Works like this:
from slugify import slugify
txt = "This is a test ---"
r = slugify(txt)
self.assertEquals(r, "this-is-a-test")
txt = "This -- is a ## test ---"
r = slugify...
Java's Interface and Haskell's type class: differences and similarities?
...self, like how Comparable<T> does it, where you are expected to use Foo implements Comparable<Foo> so that the compareTo(T otherobject) kind of has type t -> t -> Ordering. But that still requires the programmer to follow this rule, and also causes headaches when people want to mak...
Difference between case object and object
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bos: java.io.ByteArrayOutputStream =
scala> val oos = new ObjectOutputStream(bos)
oos: java.io.ObjectOutputStream = java.io.ObjectOutputStream@e7da60
scala> oos.writeObject(B)
scala> oos.writeObject(A)
ja...
What are the differences between struct and class in C++?
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@MrUniverse: This is utterly wrong. (There's a school that uses this for a convention, but it's not syntactically enforced.)
– sbi
May 29 '13 at 19:15
3
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When is it right for a constructor to throw an exception?
...job is to bring the object into a usable state. There are basically two schools of thought on this.
One group favors two-stage construction. The constructor merely brings the object into a sleeper state in which it refuses to do any work. There's an additional function that does the actual initiali...
Java Serializable Object to Byte Array
...rrayInputStream all implement the AutoCloseable interface, wouldn't it be good practice to use it to avoid missing closing them by mistake? (I'm not entirely sure if this is the best practice, that's why I'm wondering.) Example: try(ByteArrayOutputStream bos = new ByteArrayOutputStream(); ObjectOutp...
Understand the “Decorator Pattern” with a real world example
...ble extra cheese: " + someMoreCheese.GetPrice().ToString());
MushroomTopping moreMushroom = new MushroomTopping(someMoreCheese);
Console.WriteLine("Plain Margherita with double extra cheese with mushroom: " + moreMushroom.GetPrice().ToString());
JalapenoTopping moreJalapeno...
When to use an interface instead of an abstract class and vice versa?
This may be a generic OOP question. I wanted to do a generic comparison between an interface and an abstract class on the basis of their usage.
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How does variable assignment work in JavaScript?
... = {};
a and b are now pointers to the same object. So when you do:
a.foo = 'bar';
It sets b.foo as well since a and b point to the same object.
However!
If you do this instead:
a = 'bar';
you are saying that a points to a different object now. This has no effect on what a pointed to bef...