Dart: Up and Running

Errata for Dart: Up and Running

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The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update

Version Location Description Submitted By Date Submitted Date Corrected
Other Digital Version
Chapter 2
Last example in the booleans section

The example in the Booleans section: // Check for NaN. var iMeantToDoThis = 0/0; assert(iMeantToDoThis.isNaN()); should not treat isNaN as a function: it's just a field, so it should be: var iMeantToDoThis = 0/0; assert(iMeantToDoThis.isNaN);

Note from the Author or Editor:
Yep, those parentheses shouldn't be there.

Danny Yoo  Oct 30, 2012  Mar 29, 2013
Other Digital Version
Chapter 2, the last example on Throw

The last example has: String get prettyVersion() => throw const NotImplementedException(); The space between "get" and "prettyVersion" doesn't look right. The corrected code should probably be: String getPrettyVersion() => throw const NotImplementedException();

Note from the Author or Editor:
The code used to be correct (it shows defining a getter) but now isn't. The getter definition syntax has changed, so now prettyVersion() should be just prettyVersion (no parens). However, we should really just change this code not to use a getter. It's a bit too distracting here. We could use distanceTo(), for example: num distanceTo(Point other) => throw const NotImplementedException();

Danny Yoo  Oct 30, 2012  Mar 29, 2013
Page 109

You should probably mention at the bottom that you have to close all other instances of dartium (in particular, instances *not* running in checked mode) before running the given commands, otherwise the request for checked mode will be ignored.

Anonymous  Jul 25, 2014