2019-04-11T00:00:00Z https://www.uraimo.com/ Umberto Raimondi me@uraimo.com 2019-04-11T00:00:00Z https://www.uraimo.com/2019/04/11/A-long-overdue-update-on-Swift-5-0-for-raspberry-pi-zero-1-2-3

The current status of Swift 5.0 on ARM-based boards like the Raspberry Pis.

The current status of Swift 5.0 on ARM-based boards like the Raspberry Pis. 2018-06-13T00:00:00Z https://www.uraimo.com/2018/06/13/A-big-update-on-Swift-4-1-2-for-raspberry-pi-zero-1-2-3

The current status of Swift 4.1 on ARM-based boards like the Raspberry Pis.

The current status of Swift 4.1 on ARM-based boards like the Raspberry Pis. 2017-09-06T00:00:00Z https://www.uraimo.com/2017/09/06/A-small-update-on-Swift-for-raspberry-pi-zero-1-2-3

The current status of Swift on ARM-based boards like the Raspberry Pis.

The current status of Swift on ARM-based boards like the Raspberry Pis. 2017-07-22T00:00:00Z https://www.uraimo.com/2017/07/22/all-about-concurrency-in-swift-2-the-future

Discussions on how concurrency should be handled natively in Swift will soon start, new paradigms will be introduced and a swifty approach to concurrency will be defined. This article is an introduction to these topics, it could be useful if you plan to contribute to swift-evolution or even if you just want to experiment with something new using the recommended opensource libraries.

Discussions on how concurrency should be handled natively in Swift will soon start, new paradigms will be introduced and a swifty approach to concurrency will be defined. This article is an introduction to these topics, it could be useful if you plan to contribute to swift-evolution or even if you just want to experiment with something new using the recommended opensource libraries. 2017-05-07T00:00:00Z https://www.uraimo.com/2017/05/07/all-about-concurrency-in-swift-1-the-present

There are a few alternatives regarding how to handle concurrency from Swift, this article will discuss everything you have at your disposal right now, to prepare the ground to the next part of this series that will discuss what is likely to come next.

There are a few alternatives regarding how to handle concurrency from Swift, this article will discuss everything you have at your disposal right now, to prepare the ground to the next part of this series that will discuss what is likely to come next. 2017-05-01T00:00:00Z https://www.uraimo.com/2017/05/01/An-update-on-Swift-3-1-1-for-raspberry-pi-zero-1-2-3

The current status of Swift 3.1.1 on ARM-based boards like the Raspberry Pis.

The current status of Swift 3.1.1 on ARM-based boards like the Raspberry Pis. 2017-02-05T00:00:00Z https://www.uraimo.com/2017/02/05/building-a-lisp-from-scratch-with-swift

This article describes how you can build a simple LISP, based on the 1978 article <i>'A Micro Manual For LISP - Not The Whole Truth'</i> with Swift, taking advantage where possible of the features the language offers.

This article describes how you can build a simple LISP, based on the 1978 article <i>'A Micro Manual For LISP - Not The Whole Truth'</i> with Swift, taking advantage where possible of the features the language offers. 2016-12-30T00:00:00Z https://www.uraimo.com/2016/12/30/Swift-3-0-2-for-raspberrypi-zero-1-2-3

Swift for all the Raspberry Pi boards, built on Ubuntu16.04 for RaspberryPi 2/3 and on Raspbian for the original RaspberryPis (A,B,A+,B+).

Swift for all the Raspberry Pi boards, built on Ubuntu16.04 for RaspberryPi 2/3 and on Raspbian for the original RaspberryPis (A,B,A+,B+). 2016-10-27T00:00:00Z https://www.uraimo.com/2016/10/27/unowned-or-weak-lifetime-and-performance

While the usual explanation that when dealing with retain cycles you should choose between unowned or weak considering references lifetime is by now well known, sometimes you are still in doubt about which one you should actually use between the two and if defensively using only weak references is a good idea. This article helps you choose which one to use discussion about object lifetimes and weak references performance.

While the usual explanation that when dealing with retain cycles you should choose between unowned or weak considering references lifetime is by now well known, sometimes you are still in doubt about which one you should actually use between the two and if defensively using only weak references is a good idea. This article helps you choose which one to use discussion about object lifetimes and weak references performance. 2016-05-05T00:00:00Z https://www.uraimo.com/2016/05/05/recursive-tail-calls-and-trampolines-in-swift

The use of recursion can improve the overall design of your algorithms but it leaves you susceptible to stack overflows if the compiler is unable to perform specific optimizations. In this post we'll see what tail recursion and TCO are and how the use of trampolines can overcome the fact that we cannot rely on the Swift compiler performing tail call elimination.

The use of recursion can improve the overall design of your algorithms but it leaves you susceptible to stack overflows if the compiler is unable to perform specific optimizations. In this post we'll see what tail recursion and TCO are and how the use of trampolines can overcome the fact that we cannot rely on the Swift compiler performing tail call elimination. 2016-04-07T00:00:00Z https://www.uraimo.com/2016/04/07/swift-and-c-everything-you-need-to-know

Now that Swift is available on Linux and other OSes, there are even more situations where you could need to interact with C code from your Swift 3 application. This article will hopefully shed some light on the most non-obvious details and give you some practical examples and tips of how to interact with C APIs like the C standard library.

Now that Swift is available on Linux and other OSes, there are even more situations where you could need to interact with C code from your Swift 3 application. This article will hopefully shed some light on the most non-obvious details and give you some practical examples and tips of how to interact with C APIs like the C standard library. 2016-03-11T00:00:00Z https://www.uraimo.com/2016/03/11/recap-of-swift-porting-efforts-2

Since the first installment of this series a few established ports have received updates and a few new things have finally landed on master. Let's recap what happened in the last month on the front of porting Swift on other platforms.

Since the first installment of this series a few established ports have received updates and a few new things have finally landed on master. Let's recap what happened in the last month on the front of porting Swift on other platforms. 2016-03-10T00:00:00Z https://www.uraimo.com/2016/03/10/swift-3-available-on-armv6-raspberry-1-zero

After the Swift 2.2 binaries, you can now download Swift 3.0 compiled for ARMv6 single board computers, all models of RaspberryPi 1 and the new Zero.

After the Swift 2.2 binaries, you can now download Swift 3.0 compiled for ARMv6 single board computers, all models of RaspberryPi 1 and the new Zero. 2016-02-10T00:00:00Z https://www.uraimo.com/2016/02/10/swift-available-on-armv6-raspberry-1-zero

Swift compiled for ARMv6 single board computers, all models of RaspberryPi 1 and the new Zero.

Swift compiled for ARMv6 single board computers, all models of RaspberryPi 1 and the new Zero. 2016-02-09T00:00:00Z https://www.uraimo.com/2016/02/09/a-short-swift-gyb-tutorial

The GYB tool is used internally in Swift to simplify source files with many snippets of code that follow a common pattern. GYB provides some additional directives that are parsed by the tool to generate the final source files. This short tutorial describes how to use GYB in your own projects.

The GYB tool is used internally in Swift to simplify source files with many snippets of code that follow a common pattern. GYB provides some additional directives that are parsed by the tool to generate the final source files. This short tutorial describes how to use GYB in your own projects. 2016-02-05T00:00:00Z https://www.uraimo.com/2016/02/05/Dealing-With-Bit-Sets-In-Swift

Swift provides a convenient set of functionalities for fixed size integers and binary operations but you'll soon discover that in some cases the language is a bit opinionated in regard to how those operations should be performed. This post explains some of the gotchas and describe Bitter, a Swift bit manipulation library.

Swift provides a convenient set of functionalities for fixed size integers and binary operations but you'll soon discover that in some cases the language is a bit opinionated in regard to how those operations should be performed. This post explains some of the gotchas and describe Bitter, a Swift bit manipulation library. 2016-02-02T00:00:00Z https://www.uraimo.com/2016/02/02/recap-of-swift-porting-efforts

A lot has happened since Swift was made opensource and the community is every day more involved with every aspect of the language and platform, but porting the language to other platforms is where the community really shines. This post gives an overview of all the community porting efforts underway to support ARMv7/ARMv6, Android, FreeBSD, Windows.

A lot has happened since Swift was made opensource and the community is every day more involved with every aspect of the language and platform, but porting the language to other platforms is where the community really shines. This post gives an overview of all the community porting efforts underway to support ARMv7/ARMv6, Android, FreeBSD, Windows. 2016-01-06T00:00:00Z https://www.uraimo.com/2016/01/06/10-Swift-One-Liners-To-Impress-Your-Friends

Following a programming meme of a few years ago, this post presents a few Swift one liners that solve common problems following a functional approach. Will some of your friends be impressed?

Following a programming meme of a few years ago, this post presents a few Swift one liners that solve common problems following a functional approach. Will some of your friends be impressed? 2015-12-08T00:00:00Z https://www.uraimo.com/2015/12/08/XCode-7.2-and-Swift-2.1.1-released

A new XCode version and a maintenance release of the Swift compiler are now available

A new XCode version and a maintenance release of the Swift compiler are now available 2015-12-03T00:00:00Z https://www.uraimo.com/2015/12/03/Swift-3-upcoming-changes

Swift is now finally opensource, this post introduces the features and modifications that will be available with release 3.0 of the language.

Swift is now finally opensource, this post introduces the features and modifications that will be available with release 3.0 of the language. 2015-11-12T00:00:00Z https://www.uraimo.com/2015/11/12/experimenting-with-swift-2-sequencetype-generatortype

In this article, part of a series on Swift and the functional approach, we'll explore what we need to do to build our own sequences in Swift 3, discuss the differences between finite and infinite sequences and examine what we can do with them in a few example scenarios.

In this article, part of a series on Swift and the functional approach, we'll explore what we need to do to build our own sequences in Swift 3, discuss the differences between finite and infinite sequences and examine what we can do with them in a few example scenarios. 2015-11-03T00:00:00Z https://www.uraimo.com/2015/11/03/error-handling-from-objective-c-to-swift-2-and-back

Swift introduces error handling constructs like do,try,catch and try?, in this, I hope, comprehensive article we'll discuss this new feature in detail, how it affects the base frameworks and how Swift modules with the new error handling can be integrated in legacy Objective-C applications.

Swift introduces error handling constructs like do,try,catch and try?, in this, I hope, comprehensive article we'll discuss this new feature in detail, how it affects the base frameworks and how Swift modules with the new error handling can be integrated in legacy Objective-C applications. 2015-10-23T00:00:00Z https://www.uraimo.com/2015/10/23/effective-method-swizzling-with-swift

Despite the static nature of the language, it's still possible to perform method swizzling (runtime method implementation substitution) in Swift following a few simple rules.

Despite the static nature of the language, it's still possible to perform method swizzling (runtime method implementation substitution) in Swift following a few simple rules. 2015-10-08T00:00:00Z https://www.uraimo.com/2015/10/08/Swift2-map-flatmap-demystified

Swift is a language still slightly in flux, with new functionalities and alterations of behavior being introduced in every release. Much has already been written about the functional aspects of Swift and how to approach problems following a more functional approach.<br/>This short article will try to give a clear and complete explanation of how <i>map</i> and especially <i>flatMap</i> work for different types in Swift 2.0 and 3.0, with references to the current library headers.

Swift is a language still slightly in flux, with new functionalities and alterations of behavior being introduced in every release. Much has already been written about the functional aspects of Swift and how to approach problems following a more functional approach.<br/>This short article will try to give a clear and complete explanation of how <i>map</i> and especially <i>flatMap</i> work for different types in Swift 2.0 and 3.0, with references to the current library headers. 2015-09-29T00:00:00Z https://www.uraimo.com/2015/09/29/Swift2.1-Function-Types-Conversion-Covariance-Contravariance

With Swift 2.1 function types will support type conversion, discover covariance and contravariance and what this means for you

With Swift 2.1 function types will support type conversion, discover covariance and contravariance and what this means for you 2015-09-20T00:00:00Z https://www.uraimo.com/2015/09/20/Swift-2.1-released

The release 2.1 of Swift is now available

The release 2.1 of Swift is now available 2015-09-08T00:00:00Z https://www.uraimo.com/2015/09/08/ios9-uistackview-guide-swift

How to use the new iOS9 UIStackViews, all you need to know with a practical example project

How to use the new iOS9 UIStackViews, all you need to know with a practical example project 2011-09-21T00:00:00Z https://www.uraimo.com/2011/09/21/from-vim-theme-to-pygments-css

A set of VIM themes converted to CSS to be used with Pygments

A set of VIM themes converted to CSS to be used with Pygments 2011-09-21T00:00:00Z https://www.uraimo.com/2011/09/21/first-steps-in-scala-implementing-ruby-s-integer-times

Implementing Integer.times in Scala, really easy, but let's look at some of the generated code.

Implementing Integer.times in Scala, really easy, but let's look at some of the generated code. 2011-08-10T00:00:00Z https://www.uraimo.com/2011/08/10/configuring-nginx-for-jekyll-on-ubuntu

How to configure NGINX to host Jekyll on Ubuntu

How to configure NGINX to host Jekyll on Ubuntu 2010-09-06T00:00:00Z https://www.uraimo.com/2010/09/06/upgrading-the-ati-drivers-and-configuring-opencl-in-ubuntu

How to upgrade your ATI driver under Linux and verify that OpenCL is enabled and working.

How to upgrade your ATI driver under Linux and verify that OpenCL is enabled and working. 2009-07-06T00:00:00Z https://www.uraimo.com/2009/07/06/htc-magic-adb-driver-install-instructions

If you diligently followed the android driver install instruction from the Android Developer site but your HTC Magic is still discovered only as an "HTC Android Phone USB Device" and an unknown device named "ADB" because the driver contained in the last SDK is not recognized, follow these steps.

If you diligently followed the android driver install instruction from the Android Developer site but your HTC Magic is still discovered only as an "HTC Android Phone USB Device" and an unknown device named "ADB" because the driver contained in the last SDK is not recognized, follow these steps.