Skip to content

Xojo Programming Blog Posts

Testing The Compiler

Over the course of the last year, there have been a huge number of changes to the Xojo compiler (just under 800 commits). We made large refactorings, like rewriting how unqualified name lookup works. We fixed around 35 bugs, some of them dating back years. We added major new features to the language, including ‘Using’, Iterators, and new data types. To top it all off, we shipped support for a completely new platform, iOS, and then met Apple’s deadline for building 64-bit iOS apps.

And after all of that, we ended up with around eight regressions in the compiler. While not the perfect zero, I think this is just as impressive as the changes themselves.

Comments closed

Is the NSA going to get you to switch to DuckDuckGo?

Last October, I wrote a blog post about how vulnerable Google is in its search business (the overwhelming source of its revenue). I realized this vulnerability after discovering that another search engine, DuckDuckGo, was started for less than $10 million, has equivalent search results, a clean looking interface and a low cost of switching. I’ve been using DuckDuckGo for over 8 months now, I didn’t make the switch from Google for privacy reasons, I simply liked the cleaner interface, but I’ll be honest and say that the privacy it offers is something I appreciate. Apparently, I’m among a growing group of savvy searchers.

duckduckgo2.png

Comments closed

Programming Resources For Students

Can I learn to code in Xojo for free? Yes, Xojo is free for development and testing!

Do you have a free book so I can learn to code? Yes, Intro to Programming with Xojo is free!

Can I ask my beginner questions? Yes, the Xojo forum is a gateway to the friendly and helpful Xojo community.

The Xojo language is Object-Oriented. Object-Oriented programming is an excellent way to learn the fundamentals of computer programming. Xojo is also cross-platform, which means you can build apps for all kinds of platforms using a single code base. Xojo is a Rapid Application Development tool, which means it’s developed to make building apps simple and quick.

Comments closed

Casting about in both 32 and 64 bit worlds

Consider the following code:

dim i64 as Int64 = 1234567
dim i32 as int32 = 7654321

i32 = Int32(i64) // cast
i64 = Int64(i32) // cast

i32 = Ctype(i64, Int32) // convert
i64 = Ctype(i32, Int64) // convert

It all seems reasonable enough. Not useful, but seems reasonable. Only one problem. It won’t compile. Why not? The two casts to int32 and int64 will fail. Now why is that?

Comments closed

Private/Public Key Interoperability

If you do any work with private/public key cryptography, the addition of the Crypto library last year made it finally possible to create and verify digital signatures as well as encrypt and decrypt data. Using keys with other systems requires a little more work to convert them to and from the PEM format.

Comments closed