...plaining three parts: Algebraic data types. What pattern matching is Why its awesome. Algebraic data types in a nutshell ML-like functional languages allow you define simple data types called "disjoint unions" or "algebraic data types". These data structures are simple containers, and can be re...

... The trunk is the main line of development in a SVN repository. A branch is a side-line of development created to make larger, experimental or disrupting work without annoying users of the trunk version. Also, branches can be used to create development lines for multiple versions ...

What's the Hi/Lo algorithm? 5 Answers 5 ...

Is there a way to write an IF OR IF conditional statement in a windows batch-file? 14 Answers ...

...kyaJ/3/ (This only works when the selector matches ONE element max. See Edit 3 for more) . Edit 1 (June 29, 2013): (Applicable to jQuery 1.9.x only, as it works with 1.10+, see next Edit 2) This answer was the best solution at the time the question was answered. This ':hover' selector was remove...

A feature of C++ is the ability to create unnamed (anonymous) namespaces, like so: 11 Answers ...

... bcrypt is a hashing algorithm which is scalable with hardware (via a configurable number of rounds). Its slowness and multiple rounds ensures that an attacker must deploy massive funds and hardware to be able to crack your passwords. Add to that per-...

ORACLE does not permit NULL values in any of the columns that comprise a primary key. It appears that the same is true of most other "enterprise-level" systems. ...

... Short answer: Yes, it can be NULL or duplicate. I want to explain why a foreign key might need to be null or might need to be unique or not unique. First remember a Foreign key simply requires that the value in that field must exist first in a...

What is your favorite method to handle errors in Bash? The best example of handling errors I have found on the web was written by William Shotts, Jr at http://www.linuxcommand.org . ...