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

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Archive for March 8th, 2017

Using Delphi nextgen compilers … https://xkcd.com/303/ some arguments to have both for the Win32 platform

Posted by jpluimers on 2017/03/08

Last week there was a nice poke by Stefan Glienke around the Delphi nextgen compiler being used for the upcoming Intel x64 Linux support in Delphi (yes, no Arm there, hopefully somewhere in the future) at [Archive.isUsing Delphi nextgen compilers … https://xkcd.com/303/

It resulted into a nice thread of strengths and weaknesses of the classic and nextgen compilers.

I’m emphasising a long term wish for the Win32 platform to have two compilers: a classic one and an LLVM nextgen one.

Reasons include this:

  • Various compiler architectures can emit code for the same end-platformm: Kylix Linux x86 support uses the classic compiler, new Linux x64 support is using the LLVM nextgen compiler
  • Debugging non-Win32 (x86 on Windows) is slow and buggy at best
  • LLVM nextgen compiler takes about 2 orders of magnitude longer than the classic compiler
  • the classic compiler has various optimisation deficits for about 2 decades and won’t be fixed
  • the LLVM nextgen compiler has many more optimisation opportunities than the classic compiler
  • the LLVM nextgen compiler supports zerobased strings and ARC which are almost impossible to debug because of the debugger issues so writing truly cross platform code using Delphi is a drag

So, please please please Delphi team: provide an LLVM nextgen compiler for the Win32 platform.

via: [Archive.isUsing Delphi nextgen compilers … https://xkcd.com/303/

Recommended video: [WayBack] The recent next gen compiler debate reminded me of this nice talk.This is about c++ but it shows off nicely what a high quality compiler can achieve in terms of optimisation… – Christoph Hillefeld – Google+

–jeroen

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Posted in Delphi, Development, Software Development | 1 Comment »

node.js – a nightmare to get started. Did I try the wrong technology for my problem?

Posted by jpluimers on 2017/03/08

Most of my web-stuff is on Apache. Which works fine, has TLS/SSL enabled, etc.

But I wanted to do server-side JavaScript. Which somehow is a forrest without trees, or a nightmare to get started, especially on OpenSuSE.

First of all, virtually all examples explain how to run node as a script. But none explain where to save it, how to run it as a service (and restart when it crashes: it will crash) or how to run multiple sites under it. And the scripts seems to listen to a TCP port by themselves so they operate as a full server by themselves. Nice for a fully fledged portal, but not for some one-offs.

Some links below hopefully will get me re-started later on, but for now, I’ve given up: the out-of-the-box experience is totally non-intuitive.

Maybe what I really want is something else: I want JavaScript stuff that normally renders a page in the browser through the dom to run server side so I can run XMLHttpRequest to various places without bumping into CORS stuff but still render a page DOM.

If you know a better way to do what I want (serving small mostly single-page scripts written in an easy to debug/trace language) let me know.

So basically work around this:

XMLHttpRequest cannot load http://myApiUrl/login. No
'Access-Control-Allow-Origin' header is present on the requested
resource. Origin 'null' is therefore not allowed access.

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Posted in *nix, Apache2, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development | 1 Comment »

Some links on deciding if and storing your timestamps as UTC and time zone handling

Posted by jpluimers on 2017/03/08

Some links:

And a great library: nodatime/nodatime: A better date and time API for .NET

–jeroen

Posted in Development, Software Development | Leave a Comment »

 
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