...ntract. A set of public methods any implementing class has to have. Technically, the interface only governs syntax, i.e. what methods are there, what arguments they get and what they return. Usually they encapsulate semantics as well, although that only by documentation. You can then have differen...

... good and fast way that only opens and positions the file once @echo off call :sub >output.txt exit /b :sub command1 command2 ... commandN Edit 2020-04-17 Every now and then you may want to repeatedly write to two or more files. You might also want different messages on the screen. It is sti...

... frame (whose data may be gibabytes). What about dftest? Doesn't this also allocate a very large intermediate object where the returned index may be very small, or even empty. Are these magically optimized away using lazy views. If not then surely there must be an efficient way. ...

...cepted since is the most complete one :) – Oscar Carballal Jul 3 '10 at 4:38 2 The default source...

...scalaz.TreeLoc). It turns out that the structure of the zipper is automatically derivable from the original data structure, in a manner that resembles symbolic differentiation of an algebraic expression. But how does this help you with your Scala case classes? Well, Lukas Rytz recently prototyped a...

... Update for those using Python3: You can simply use conda install mysqlclient to install the libraries required to use MySQLdb as it currently exists. The following SO question was a helpful clue: Python 3 ImportError: No module named 'ConfigParser' . Installing mysqlclient will install...

...ng a linear loop inside another linear loop means this for loop is accidentally O(n2) — as the length of the string increases, the time this loop takes increases quadratically. Instead of doing that you could use the characters's string collection. – ignaciohugog ...

...owerset([4, 5, 6]))) Using yield means that you do not need to calculate all results in a single piece of memory. Precalculating the masks outside the main loop is assumed to be a worthwhile optimization. share | ...

... Here is what I recommend: Create a class called RssResult that inherits off the abstract base class ActionResult. Override the ExecuteResult method. ExecuteResult has the ControllerContext passed to it by the caller and with this you can get the data and content type...

I need to find a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both. ...