... And I do understand that practically speaking PHP hashtables give O(1) performance, or at least O(1) on average - that's what hashtables are for. I was just curious as to why you said they are "really O(n)" and not "really O(logn)". Great post by the way! – Cam ...

...of the input and n is the number of items in the hash. The O(1) lookup performance claim makes at least two assumptions: Your objects can be equality compared in O(1) time. There will be few hash collisions. If your objects are variable size and an equality check requires looking at all bits th...

... other is driven by the business. The following assumes that you use some form of source control and a build server. For context we use TeamCity and Subversion/Git. TeamCity is free for a small (10) number of projects and is a very good build server but there are others, some of which are completel...

...ridden == method, but there are exceptions. Numeric types, for example, perform type conversion across ==, but not across eql?, so: 1 == 1.0 #=> true 1.eql? 1.0 #=> false So you're free to override this for your own uses, or you can override == and use alias :eql? :== so the two method...

...mes alone. First, there was CouchDB, a database created by Damien Katz, a former IBM developer. Its official name was changed to Apache CouchDB after it became an Apache project. A company named CouchIO was founded to work on Apache CouchDB and later changed its name to CouchOne (by "its name" I m...

... its UI and peculiarities, so we intend to write specific code to each platform in this regard. In other hands, all logic code, business rules, and things that can be shared we intend to write using C++, so we can compile the same code to each platform. In the diagram, you can see the C++ layer at ...

...ark tool is very basic, and while it will give you a solid idea of some performance, it is a bad idea to only depend on it if you plan to have your site exposed to serious stress in production. Having said that, here's the most common and simplest parameters: -c: ("Concurrency"). Indicates how man...

...es a number of reasons why the Reflect object is useful: (I've copied (and formatted) the following text for future reference from that source as they are the only examples I could find. Besides that, they make sense, already have a good explanation and touch the question's apply example.) More use...

... It is not in form of "<" id-left "@" id-right ">". – Michael-O Mar 28 at 9:33  |  ...

...d to have many topic branches (and often several remotes) I always use the form: git push origin master ... to avoid accidentally pushing other branches. In reply to your comments on one of the other answers, it sounds to me as if are learning about git in a top-down way very effectively - you...