I often have several statements at the start of a method to return for “easy” situations. For example, this: public void DoStuff(Foo foo) { if (foo != null) { … } } … can be made more readable (IMHO) like this: public void DoStuff(Foo foo) { if (foo == null) return; … } So yes, … Read more
Since I’m the current world record holder for the most digits of pi, I’ll add my two cents: Unless you’re actually setting a new world record, the common practice is just to verify the computed digits against the known values. So that’s simple enough. In fact, I have a webpage that lists snippets of digits … Read more
Tries, also known as prefix-trees or crit-bit trees, have existed for over 40 years but are still relatively unknown. A very cool use of tries is described in “TRASH – A dynamic LC-trie and hash data structure”, which combines a trie with a hash function.
Developers are often confused by what a callback is because of the name of the damned thing. A callback function is a function which is: accessible by another function, and is invoked after the first function if that first function completes A nice way of imagining how a callback function works is that it is … Read more
Let’s take your example of a Dog and a Cat class, and let’s illustrate using C#: Both a dog and a cat are animals, specifically, quadruped mammals (animals are waaay too general). Let us assume that you have an abstract class Mammal, for both of them: public abstract class Mammal This base class will probably … Read more
Lambda comes from the Lambda Calculus and refers to anonymous functions in programming. Why is this cool? It allows you to write quick throw away functions without naming them. It also provides a nice way to write closures. With that power you can do things like this. Python def adder(x): return lambda y: x + … Read more
Another one from xkcd
Just a clarification Although the previous answers are right whenever you try to spot the randomness of a pseudo-random variable or its multiplication, you should be aware that while Random() is usually uniformly distributed, Random() * Random() is not. Example This is a uniform random distribution sample simulated through a pseudo-random variable: BarChart[BinCounts[RandomReal[{0, 1}, 50000], … Read more
I recommend checking out Microsoft’s SQL Server sample databases: https://github.com/Microsoft/sql-server-samples/releases/tag/adventureworks The AdventureWorks sample uses a very clear and consistent naming convention that uses schema names for the organization of database objects. Singular names for tables Singular names for columns Schema name for tables prefix (E.g.: SchemeName.TableName) Pascal casing (a.k.a. upper camel case)
You can get some information : From Martin Fowler about Mock and Stub Fake objects actually have working implementations, but usually take some shortcut which makes them not suitable for production Stubs provide canned answers to calls made during the test, usually not responding at all to anything outside what’s programmed in for the test. … Read more