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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Software Development’ Category

Barry Kelly on “Implementing Closures” in Delphi (via: Google Groups)

Posted by jpluimers on 2014/10/22

It is always nice to see one of the compiler engineers write down how something was implemented.

In this case, Barry Kelly explains in comp.compilers on Implementing Closures in Delphi 2009. The post is about 4.5 years old, but still very relevant.

About 9 months earlier, he participated in a Reddit thread about a similar topic. Worth reading too!

–jeroen

via: Implementing Closures – Google Groups.

Posted in Delphi, Delphi 2009, Delphi 2010, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Software Development | 2 Comments »

Delphi fun code: How to make a water effect on TImage or anything? (via: Stack Overflow)

Posted by jpluimers on 2014/10/21

Every once in a while you see a question with some great code in the answers.

This is such a time: image – How to make a water effect on TImage or anything? – Stack Overflow.

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Some on-line XML tools I use often

Posted by jpluimers on 2014/10/16

A big part of the cloud is not about storage, it is about on-line tools that run in your web-browser so you do not have to install them locally.

Quite a bit of my XML work can be done with on-line tools like these:

–jeroen

Posted in " quot, & amp, > gt, < lt, ' apos, CSV, Development, nbsp, Software Development, XML, XML escapes, XML/XSD, XPath, XSD, XSLT | Leave a Comment »

Continua v1.5.0.338 got released last week (via: Version 1.5 History | Continua CI – Page2RSS)

Posted by jpluimers on 2014/10/15

Two changes I really like in the new v1.5.0.338 build of Continua CI version log history:

  • Update: Now logging the environment variables passed to actions in the build log
  • Update: Better messages when handling errors expanding variables

That makes debugging build issues a lot easier, as many of them are related to (environment) variables.

–jeroen

via Version 1.5 History | Continua CI – Page2RSS.

Posted in Continua CI, Continuous Integration, Development, Software Development | Leave a Comment »

The Delphi MESSAGE directive: don’t forget quotes!

Posted by jpluimers on 2014/10/15

The Delphi MESSAGE directive is a very powerful one, you can generate compiler hints, warnings and errors with it, even fatal ones that abort compilation.
The compiler will return error codes H1054 (hint), W1054 (warning), E1054 (error) or F1054 (fatal error), which in the documentation are known under the catch-all x1054.

You need to take a bit of care with message directives, especially with the quotes. For instance

{$Message Error 'Not implemented'}

gives you the error below, but continues compiling:

[DCC Error] E1054 Not implemented

However, if you forget the single quotes

{$Message Error Not implemented}

it gives you error E1030  (not x1054), which is a bit confusing as it is a catch-all for invalid directives:

[DCC Error] E1030 Invalid compiler directive: 'message'

Here is a full example of all the message directives and compiler reactions you can get: Read the rest of this entry »

Posted in Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Software Development | Leave a Comment »

 
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