Some recent podcast episodes

I have listened to these episodes multiple times now and have been able to extract more value and extra insights from them on every playback.

I hope you find them enjoyable as much as I have.

Akimbo: No such thing (as writers block)

Seth Godin’s podcast is superb, this episode on writers block is my favourite.  In it he argues convincingly that there is no such thing.

Developer on Fire: Episode 196 Rob Conery

Not sure how I found Dave Raels podcast, Developer on Fire but I am glad I did. In each episode Dave interviews famous and not so famous programmers. I have enjoyed rummaging through the archive listening to interviews with Gerald Weinberg, Ward Cunningham, Dave Thomas, the list goes on.

My favourite episode features Rob Conery. In this episode they talk about Rob’s book; The Imposters Handbook (a superb book!)  but it is the discussions on the Perception of danger and Getting over yourself that really make this episode special for me.

The Hello World Podcast: Episode 12 Scott Hanselman

As well as hosting one of my favourite podcast, Hanselminutes Scott is a fantastic guest. In this episode, Scott  talks about retaining some perspective even when your project is being chased by ninjas and the common trait his mentors share.


Fixed NG Book 5 Dependency Injection Page 175

I have been working through the NG2 book on Angular 5 and became stuck when trying to get an example on Dependency Injection to work.

Here is part of the problematic code I was unable to run:

When running the sample, the page did not load and part of the console message reported by Chrome is shown below:

This problem was occurring using the following Angular environment:

Starting with the user-demo-component.ts file and after commenting out various parts of the code within this file I tracked the problem to the constructor:

constructor(private userService: UserService) {

Fortunately StackOverflow to the rescue and this answer provided the fix.  I made the following change to user-demo-component.ts whereby I added providers to the @Component decorator

  providers: [UserService] 

The @Component decorator should now look like this:

Why does the completed example work without this fix?

Good question! If you have read any of NG2 book you will know that all the code examples in the book come with the source ready for you to try out rather than typing. When I checked the example and ran them I couldn’t see a similar change yet the code worked as expected so I will need to continue digging to ascertain why the supplied version works.

I will update the post once I have found out.

Update 23/04/2018

The completed example uses a different version of Angular and typescript. Here is the output from ng –version

The completed example which works uses Angular 5.2.0 whereas the version of Angular I am using is 5.2.9.