Recently I had to figure out how to publish a NUGet package to a private password-protected repository as part of a TeamCity CI build process. NUGet, for those who are not aware, is a tool for managing .NET software in a convenient manner. It is similar in its purpose to Maven, the Java packaging framework. The implementation details are, of course, quite different.
Scrapy is a nice python environment for web scraping, i.e. extracting information from web sites automatically by crawling them. It works best with anonymous data discovery, but nothing stops you from having active sessions as well. In fact, scrapy transparently manages cookies, which are usually used to track user sessions. Unfortunately, the sessions don't survive between runs. This, however, can be fixed quite easily by adding custom cookie middleware. Here is an example:
.NET's MemoryStream is a very convenient class. It allows you to use a byte array as storage, while accessing it via standard Stream API. Among other things, it allows you to work with a section of a larger byte array, which is very handy when different actions need to be taken for different slices.
I use Ubuntu (a modern Linux distribution) as my main work station. Everything worked fine until I upgraded from version 14.10 to 15.04 of the OS. At this point strange things started to happen. After working for an hour or two my environment would freeze and stop responding altogether. Neither Ctrl-Alt-Del nor Ctrl-Alt-Backspace would produce any reaction. I couldn't connect to the machine remotely as well. Only hard reset would take me out of this state.
Not an uncommon task in multithreaded programming - what if you want to terminate a background thread, which is blocked at the moment, and then to make sure it has actually exited. In .NET, you can do the following:
What JVM-based web framework to choose? There seems to be so many out in the big world, and all claim to be better than the rest. Some examples of the frameworks of which I am personally aware:
Earlier I wrote about issues with the new offer from Google - the "Inbox" mail service. Recently Google released updates for its Inbox web and Android clients. As a result, it works almost perfectly. In particular:
val values in Scala are, by specification, const, or final in Javaspeak. That means once assigned, they cannot be re-assigned. This doesn't mean that the assignment has to be something dull or simple. In fact, you can have a large piece of code doing all sorts of calculations with the result assigned to your value. Do it like this:
When it comes to SQL queries, there are two ways you can execute them from your program, whether it targets Android or not. One is ad hoc - create an SQL statement that finds your data (or manipulates it), with all the parameters of the actual query clauses already embedded in it. For example: