...rrent blub architecture, use a graph database, or CouchDB, or BigTable, or whatever fits your app and you think is cool. It might give you an advantage, and its fun to try new things. Whatever you chose, try not to build the database engine yourself unless you really like building database engines....

... By what you wrote, you are missing a critical piece of understanding: the difference between a class and an object. __init__ doesn't initialize a class, it initializes an instance of a class or an object. Each dog has colour, bu...

... with a fixed number of files, since you do specify the number of buckets. What hive will do is to take the field, calculate a hash and assign a record to that bucket. But what happens if you use let's say 256 buckets and the field you're bucketing on has a low cardinality (for instance, it's a US s...

...ate void Action2(); ... Delegate x = () => Console.WriteLine("hi"); What would you expect the concrete type of the object referred to by x to be? Yes, the compiler could generate a new delegate type with an appropriate signature, but that's rarely useful and you end up with less opportunity f...

... what will be the difference between p + p and p > p – Muhammad Rizwan Nov 28 '16 at 17:30 7 ...

... me): The shortcut I use the most is Ctrl + B (Go to declaration), to see what a method does, where a variable is declared etc. This is almost always followed by Ctrl + Alt + Left to get back to where I was (Ctrl + Alt + Right works to “go forward” again). A related navigation shortcut is Ctrl...

... smell as it suggests the author doesn't know about the two methods above (what else might they not know?). Java has special support for the + operator when used with strings (see the documentation) which translates the code you posted into: StringBuilder sb = new StringBuilder(); sb.append(""); s...

...G that is hard to change. (this is a tiny contrived example after all) So what if, instead of newing this bad boy up inside WorkflowStepper, you just passed it into the constructor? So then whoever called it had to new up the EmailSender. new WorkflowStepper(emailSender).Step() Imagine you have hun...

...ic initialization order problems See this article describing lifetimes: What is the lifetime of a static variable in a C++ function? See this article that discusses some threading implications to singletons: Singleton instance declared as static variable of GetInstance method, is it thread-saf...

... Well, what I usually do is have my methods that could error-out at runtime take a reference to a NSError pointer. If something does indeed go wrong in that method, I can populate the NSError reference with error data and return nil...