Randal Schwartz's guest appearances

Randal Schwartz

The Kindle Chronicles

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OwlTail

My guest today is Randal Schwartz. He is a Google Developer Expert on Flutter and Dart. He is also very active in the Perl community and he wrote multiple books on Perl, he was the host of FLOSS weekly, a podcast about Free Libre Open Source Software.In this episode, we focused on null safety with Dart. Dart 2.12 added support for null safety. When you opt into null safety, types in your code are non-nullable by default. This means that variables can't contain null unless you say they can. With null safety, your runtime null-dereference errors turn into edit-time analysis errors.We also talked about migrating our existing code to null safety, and the migrations tools that can help us make the migration process as seamless as possible.ResourcesDart documentationSound null safetyMigrating to null safetyUnderstanding null safety  by Bob NystromUnsound null safetyNull safety FAQDart language evolutionFLOSS WeeklyEpisode 245: Dart (Seth Ladd)Episode 511: Flutter 1.0 (Eric Seidel)Flutter Community Humpday Q&amp;A/AMAFrom the Flutter Team, it's Fitz!Null Safety and Cloud Functions with Kevin MooreDart "mockito" null safetyflutter.dev/communityGuest: Randal SchwartzTwitter @RandalSchwartzGitHub @RandalSchwartzLinkedIn linkedin.com/in/randalschwartzWeb stonehenge.comYouTubeGoogle Developer Expert ProfileWikipediaHost: Vince VargaTwitter @vincevargadevGitHub @vincevargadevLinkedIn @vincevargadevWeb vincevarga.dev

My guest today is Randal Schwartz. He is a Google Developer Expert on Flutter and Dart. He is also very active in the Perl community and he wrote multiple books on Perl, he was the host of FLOSS weekly, a podcast about Free Libre Open Source Software.In this episode, we focused on null safety with Dart. Dart 2.12 added support for null safety. When you opt into null safety, types in your code are non-nullable by default. This means that variables can't contain null unless you say they can. With null safety, your runtime null-dereference errors turn into edit-time analysis errors.We also talked about migrating our existing code to null safety, and the migrations tools that can help us make the migration process as seamless as possible.Resources<ul><li><a href="https://dart.dev/guides" rel="nofollow" target="_blank">Dart documentation</a><ul><li><a href="https://dart.dev/null-safety" rel="nofollow" target="_blank">Sound null safety</a></li><li><a href="https://dart.dev/null-safety/migration-guide" rel="nofollow" target="_blank">Migrating to null safety</a></li><li><a href="https://dart.dev/null-safety/understanding-null-safety" rel="nofollow" target="_blank">Understanding null safety  by Bob Nystrom</a></li><li><a href="https://dart.dev/null-safety/unsound-null-safety" rel="nofollow" target="_blank">Unsound null safety</a></li><li><a href="https://dart.dev/null-safety/faq" rel="nofollow" target="_blank">Null safety FAQ</a></li><li><a href="https://dart.dev/guides/language/evolution" rel="nofollow" target="_blank">Dart language evolution</a></li></ul></li><li><a href="https://twit.tv/shows/floss-weekly" rel="nofollow" target="_blank">FLOSS Weekly</a><ul><li><a href="https://twit.tv/shows/floss-weekly/episodes/245" rel="nofollow" target="_blank">Episode 245: Dart (Seth Ladd)</a></li><li><a href="https://twit.tv/shows/floss-weekly/episodes/511" rel="nofollow" target="_blank">Episode 511: Flutter 1.0 (Eric Seidel)</a></li></ul></li><li><a href="https://www.youtube.com/watch?v=ROHP97ctcmE&amp;list=PL4dBIh1xps-HifFmjGWK0QwIH3H-x1cQu" rel="nofollow" target="_blank">Flutter Community Humpday Q&amp;A/AMA</a><ul><li><a href="https://www.youtube.com/watch?v=ousICpRKW4o" rel="nofollow" target="_blank">From the Flutter Team, it's Fitz!</a></li><li><a href="https://www.youtube.com/watch?v=IjrzpE1dB1w" rel="nofollow" target="_blank">Null Safety and Cloud Functions with Kevin Moore</a></li></ul></li><li><a href="https://github.com/dart-lang/mockito/blob/master/NULL_SAFETY_README.md" rel="nofollow" target="_blank">Dart "mockito" null safety</a></li><li><a href="https://flutter.dev/community" rel="nofollow" target="_blank">flutter.dev/community</a></li></ul>Guest: Randal Schwartz<ul><li>Twitter <a href="https://twitter.com/RandalSchwartz" rel="nofollow" target="_blank">@RandalSchwartz</a></li><li>GitHub <a href="https://github.com/RandalSchwartz" rel="nofollow" target="_blank">@RandalSchwartz</a></li><li>LinkedIn <a href="https://www.linkedin.com/in/randalschwartz/" rel="nofollow" target="_blank">linkedin.com/in/randalschwartz</a></li><li>Web <a href="http://www.stonehenge.com/" rel="nofollow" target="_blank">stonehenge.com</a></li><li><a href="https://www.youtube.com/channel/UCUDt0S0gfQJ4eLkx66ox5Jg" rel="nofollow" target="_blank">YouTube</a></li><li><a href="https://developers.google.com/community/experts/directory/profile/profile-randal-l-schwartz" rel="nofollow" target="_blank">Google Developer Expert Profile</a></li><li><a href="https://en.wikipedia.org/wiki/Randal_L._Schwartz" rel="nofollow" target="_blank">Wikipedia</a></li></ul>Host: Vince Varga<ul><li>Twitter <a href="https://twitter.com/vincevargadev" rel="nofollow" target="_blank">@vincevargadev</a></li><li>GitHub <a href="https://github.com/vincevargadev" rel="nofollow" target="_blank">@vincevargadev</a></li><li>LinkedIn <a href="https://www.linkedin.com/in/vincevargadev/" rel="nofollow" target="_blank">@vincevargadev</a></li><li>Web <a href="https://vincevarga.dev/" rel="nofollow" target="_blank">vincevarga.dev</a></li></ul>

Null Safety with Randal Schwartz

Flutter allows developers to build cross-platform mobile apps. In our previous show about Flutter, Eric Seidel from Google described the goals of Flutter, why he founded the project, and how Flutter is built. In today’s show, Randal Schwartz talks about Flutter in more detail–including the developer experience of building Flutter apps and why he finds Flutter so exciting. Randal is a longtime software developer who has focused mostly on web applications. He’s also the host of the popular podcast FLOSS Weekly, a show about open source software. Like many developers, Randal has stayed away from mobile development in the past. If you write a mobile application, you have historically had to build iOS and Android apps separately. That is a large up-front cost, and Flutter reduces the cost by allowing users to develop mobile apps for iOS and Android with a single codebase. Randal has been podcasting about open source software for 12 years, so he brings historical depth to this conversation. He has also been working with Dart for several years–Dart is a language developed by Google that is used in Flutter. The post Flutter in Practice with Randal Schwartz appeared first on Software Engineering Daily.

Flutter allows developers to build cross-platform mobile apps. In our previous show about Flutter, Eric Seidel from Google described the goals of Flutter, why he founded the project, and how Flutter is built. In today’s show, Randal Schwartz talks about Flutter in more detail–including the developer experience of building Flutter apps and why he finds Flutter so exciting. Randal is a longtime software developer who has focused mostly on web applications. He’s also the host of the popular podcast FLOSS Weekly, a show about open source software. Like many developers, Randal has stayed away from mobile development in the past. If you write a mobile application, you have historically had to build iOS and Android apps separately. That is a large up-front cost, and Flutter reduces the cost by allowing users to develop mobile apps for iOS and Android with a single codebase. Randal has been podcasting about open source software for 12 years, so he brings historical depth to this conversation. He has also been working with Dart for several years–Dart is a language developed by Google that is used in Flutter. The post <a href="https://softwareengineeringdaily.com/2018/07/11/flutter-in-practice-with-randal-schwartz/" rel="nofollow" target="_blank">Flutter in Practice with Randal Schwartz</a> appeared first on <a href="https://softwareengineeringdaily.com" rel="nofollow" target="_blank">Software Engineering Daily</a>.

Flutter in Practice with Randal Schwartz

Kindle News: We have fresh rumors of new student-oriented Kindle models coming as soon as September from Andrea James of the Seattle Post-Intelligencer and Peter Burrows of Business Week's The Tech Beat.  This led John C. Dvorak to increase the warmth of his Kindle assessment compared with his initial scoffing on This Week in Tech just after the Kindle was introduced.  (Note to social-network savvy Amazon exec if you're listening to this podcast: feel free to call me at 303-919-7187 if you'd like to arrange for The Kindle Chronicles to evaluate a review unit of the any new Kindle...)LATE-BREAKING REPORT WHICH DIDN'T MAKE THE PODCAST: Via Jim Cheshire, I see the New York Times today is quoting Craig Berman, Amazon’s chief spokesman, as saying, "One thing I can tell you forsure is that there will be NO new version of the Kindle this year. Anew version is possible sometime next year at the earliest.” I hope that's just smoke.Tech Tip: Adrienne Cousins on the Yahoo Kindle Korner group has posted several bookmark files which make it much easier to reach web sites on the Kindle. Also, Jim Cheshire of DecodingTheKindle recommends Skweezer to format blogs for quicker and cleaner viewing on the Kindle. Hat tip to Stephen Windwalker for suggesting Adrienne's bookmarks.The "What's on Your Kindle?" Interview: My guest this week is Randal L. Schwartz of Stonehenge. We met at a photography workshop last week conducted by Chris Marquardt of the Tips from the Top Floor podcast.   Randal recommends Baen Books as a great source of inexpensive quality books for the Kindle, especially in the science fiction category.  A favorite of his is James P. Hogan. Kindle Quote: "Fear Oratory Will Be Obama's Undoing" by Edward Luce.Kindle Comments by Bob Boyken, RobinTX and Steven Schwindt.Music for my podcast is "Ra-Monk" by Eval Manigat on the "Variations inTime: A Jazz Perspective" CD by Public Transit Recording, courtesy of IODA Promonet.

Kindle News: We have fresh rumors of new student-oriented Kindle models coming as soon as September from <a href="http://blog.seattlepi.nwsource.com/amazon/archives/146874.asp" rel="nofollow" target="_blank">Andrea James</a> of the Seattle Post-Intelligencer and <a href="http://www.stonehenge.com/merlyn/" rel="nofollow" target="_blank">Peter Burrows</a> of Business Week's The Tech Beat.  This led John C. Dvorak to <a href="http://www.dvorak.org/blog/?p=22111" rel="nofollow" target="_blank">increase the warmth</a> of his Kindle assessment compared with his initial <a href="http://twit.tv/123" rel="nofollow" target="_blank">scoffing</a> on This Week in Tech just after the Kindle was introduced.  (Note to social-network savvy Amazon exec if you're listening to this podcast: feel free to call me at 303-919-7187 if you'd like to arrange for The Kindle Chronicles to evaluate a review unit of the any new Kindle...)LATE-BREAKING REPORT WHICH DIDN'T MAKE THE PODCAST: Via <a href="http://www.decodingthekindle.com/2008/08/28/no-kindle-20-in-2008/" rel="nofollow" target="_blank">Jim Cheshire</a>, I see the <a href="http://" rel="nofollow" target="_blank">New York Time</a><a href="http://bits.blogs.nytimes.com/2008/08/28/extinguish-the-rumors-no-new-kindle-this-year/" rel="nofollow" target="_blank">s</a> today is quoting Craig Berman, Amazon’s chief spokesman, as saying, "One thing I can tell you for sure is that there will be NO new version of the Kindle this year. A new version is possible sometime next year at the earliest.” I hope that's just smoke.Tech Tip: Adrienne Cousins on the Yahoo Kindle Korner group has <a href="http://groups.yahoo.com/group/kindlekorner/message/9519?threaded=1&amp;l=1" rel="nofollow" target="_blank">posted</a> several bookmark files which make it much easier to reach web sites on the Kindle. Also, Jim Cheshire of <a href="http://decodingthekindle.com" rel="nofollow" target="_blank">DecodingTheKindle</a> <a href="http://www.decodingthekindle.com/2008/08/28/a-world-of-websites-with-skweezer-and-the-kindle/" rel="nofollow" target="_blank">recommends</a> <a href="http://greenlightwireless.net/" rel="nofollow" target="_blank">Skweezer</a> to format blogs for quicker and cleaner viewing on the Kindle. Hat tip to <a href="http://kindlehomepage.blogspot.com/" rel="nofollow" target="_blank">Stephen Windwalker</a> for suggesting Adrienne's bookmarks.The "What's on Your Kindle?" Interview: My guest this week is <a href="http://en.wikipedia.org/wiki/Randal_L._Schwartz" rel="nofollow" target="_blank">Randal L. Schwartz</a> of <a href="http://" rel="nofollow" target="_blank">Stonehenge</a>. We met at a photography workshop last week conducted by <a href="http://www.tipsfromthetopfloor.com/" rel="nofollow" target="_blank">Chris Marquardt</a> of the Tips from the Top Floor podcast.   Randal recommends <a href="http://www.baen.com/" rel="nofollow" target="_blank">Baen Books</a> as a great source of inexpensive quality books for the Kindle, especially in the science fiction category.  A favorite of his is <a href="http://www.baen.com/author_catalog.asp?author=jphogan" rel="nofollow" target="_blank">James P. Hogan</a>. Kindle Quote: <a href="http://www.ft.com/cms/s/0/97717a32-7497-11dd-bc91-0000779fd18c.html?nclick_check=1" rel="nofollow" target="_blank">"Fear Oratory Will Be Obama's Undoing"</a> by Edward Luce.Kindle Comments by Bob Boyken, RobinTX and Steven Schwindt.Music for my podcast is "Ra-Monk" by Eval Manigat on the "Variations in Time: A Jazz Perspective" CD by Public Transit Recording, courtesy of <a href="http://www.iodapromonet.com/login.php" rel="nofollow" target="_blank">IODA Promonet</a>.

6 Randal Schwartz