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Category: Learning

Tip: Automatic Reference Counting

As defined on Wikipedia, Automatic Reference Counting (or ARC) is a “memory management enhancement where the burden of keeping track of an object’s reference count is lifted from the programmer to the compiler.”

With object-oriented programming, each new object you create takes up space in memory. This memory needs to be managed somehow. In the beginning, this management of memory was left entirely to the programmer, such as with C++ or originally with Objective-C.

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But it’s not precise: A floating point values primer

From time to time we see the issue raised where floating point values are not exact like we can write in the code editor or on paper. Usually the confusion or complaint is worded like “I can’t get my double value to be precise like in the string” or “It’s not the same as I get doing it by hand”.

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Hour of Code: Cat Pictures

It’s time again for Hour of Code! The Hour of Code is a global movement reaching tens of millions of students in 180+ countries. Anyone, anywhere can participate in Hour of Code, from ages 4 to 104. At Xojo, we are again participating in this wonderful way to help people learn to program.

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Guest Post: Using Gitflow for Team Development

Guest Post by Kem Tekinay, a consultant and developer based in New York. Kem has been an avid Xojo user since the early days and is a world-renowned thinker and philosopher, at least its his own mind. You can find him and his works through the MacTechnologies Consulting web site.

After months of work, your project is so fabulous that you need more developers. You’ve been using Git as your version control system and creating/merging branches to keep it all straight, but so far it’s just been for personal use. How do you coordinate with others to maintain some semblance of order?

Try the Gitflow Workflow.

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The Citizen Developer

I’m seeing more and more headlines about how citizen developers are helping create the apps that business need.

In particular, a recent article at ZDNet, “The advent of the citizen developer” talks about how non-programmers can help create the apps needed by an enterprise company:

So the business-side has long had to place their fate in the hands of those with the requisite skills but often with little sympathy for or first-hand knowledge of the business itself. Or they just ended-up acquiring pre-existing software that was a close enough fit, and then had it configured to their needs. Neither path has typically produced tech solutions that fit business needs very well, and ‘good enough’ has usually been the mantra of the day.

These articles explain how “citizen developers”, sometimes referred to as a business analysts (or maybe even power-users), are using rapid application development tools to create apps that helps the business solve a problem more quickly than going through a more formal and lengthy IT process.

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