For my link archive: [WayBack] Forced routing of selective emails to ISP SMTP via Mikrotik Routing | Syed Jahanzaib Personal Blog to Share Knowledge !
–jeroen
Archive for the ‘Software Development’ Category
Forced routing of selective emails to ISP SMTP via Mikrotik Routing | Syed Jahanzaib Personal Blog to Share Knowledge !
Posted by jpluimers on 2021/01/14
Posted in Development, MikroTik, Power User, RouterOS, routers, Scripting, Software Development | Leave a Comment »
GitHub – pierrejean-coudert/delphi-libraries-list: List of Delphi Libraries and Frameworks
Posted by jpluimers on 2021/01/14
For my link archive: [WayBack] GitHub – pierrejean-coudert/delphi-libraries-list: List of Delphi Libraries and Frameworks
–jeroen
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Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »
The difference between thread-safety and re-entrancy – The Old New Thing
Posted by jpluimers on 2021/01/13
Just in case I need a nice example about the difference: [WayBack] The difference between thread-safety and re-entrancy – The Old New Thing.
It has both that and the definition:
An operation is “thread-safe” if it can be performed from multiple threads safely, even if the calls happen simultaneously on multiple threads.
An operation is re-entrant if it can be performed while the operation is already in progress (perhaps in another context). This is a stronger concept than thread-safety, because the second attempt to perform the operation can even come from within the same thread.
–jeroen
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Programming Wisdom auf Twitter: ““Good code is its own best documentation. As you’re about to add a comment, ask yourself, “How can I improve the code so that this comment isn’t needed?” Improve the code and then document it to make it even clearer.” – Steve McConnell”
Posted by jpluimers on 2021/01/13
[WayBack] Programming Wisdom auf Twitter: ““Good code is its own best documentation. As you’re about to add a comment, ask yourself, “How can I improve the code so that this comment isn’t needed?” Improve the code and then document it to make it even clearer.” – Steve McConnell”
Code the why in a clean and understandable way.
Then document the how, and clear up any implementation/usage details that are hard to understand.
–jeroen
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Posted in Development, Software Development | Leave a Comment »
Delphi TVirtualMethodInterceptor like magic: some links of useful stuff made with it
Posted by jpluimers on 2021/01/13
I think TVirtualMethodInterceptor is a really nice things added to Delphi XE: it allows you to overwrite virtual methods of a class.
Since the documentation from that era cannot be saved in the WayBack machine, here is some more recent documentation:
- [WayBack] Using Virtual Method Interceptors – RAD Studio
- [WayBack] System.Rtti.TVirtualMethodInterceptor – RAD Studio API Documentation
- [WayBack] System.Rtti.TVirtualMethodInterceptor.Proxify – RAD Studio API Documentation
- [WayBack] System.Rtti.TVirtualMethodInterceptor.Unproxify – RAD Studio API Documentation
Over the years, the underlying RTTI has been improved, so it can now do more than in the past, but is still cumbersome to use, see for instance [WayBack] tutorial script delphi Changing component class at run-time on demand – CODE Q&A Solved and [WayBack] TVirtualMethodInterceptor (Delphi) – RAD Studio Code Examples and [WayBack] Entropy Overload: Virtual method interception and [WayBack] Playing around with TVirtualMethodInterceptor | Delphi Haven with TVirtualMethodLogger.
Luckily there are more powerful alternatives based on the same ideas and/or underlying implementationIn fact, it can do so much for instance on the Spring4D and DSharp frameworks.
A demo is at [WayBack] Delphi sorcery: Pimp your unit tests using mock objects or [WayBack] Delphi sorcery: AOP and duck typing in Delphi.
The demo of the mocking framework was at code.google.com/archive/p/delphisorcery, but now is part of bitbucket.org/sglienke/dsharp at bitbucket.org/sglienke/dsharp/src/master/Source/Testing.
Some relevant directories:
- bitbucket.org/sglienke/dsharp/src/master/Source/Core
- bitbucket.org/sglienke/dsharp/src/master/Source/Interception
- bitbucket.org/sglienke/dsharp/src/master/Source/Testing
Basically it is a playground for the more often updated and stable Spring4D where these directories and files are relevant:
- bitbucket.org/sglienke/spring4d/src/master/Source/Base
- bitbucket.org/sglienke/spring4d/src/master/Source/Core/Interception
- bitbucket.org/sglienke/spring4d/src/master/Source/Core/Mocking
–jeroen
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Posted in Delphi, Development, Software Development | Leave a Comment »
Not all language packs are created equal…
Posted by jpluimers on 2021/01/12
[WayBack] Why don’t I get properly translated program output after installing the corresponding language pack? – The Old New Thing.
It means you cannot fully cover all translations when writing software.
More on translating your software at [WayBack] Where can I get the glossary of Microsoft’s standard translations for computer terms? – The Old New Thing « The Wiert Corner – irregular stream of stuff.
–jeroen
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Posted in Development, Software Development, The Old New Thing, Windows Development | Leave a Comment »
TODO: if weerslag hasn’t supported https yet, dig deeper into ProxyPass / ProxyPassReverse
Posted by jpluimers on 2021/01/12
I’ve this page for my brother: https://martijn.pluimers.com/agenda-month-weather.html.
It serves his agenda plus a few weather widgets.
The weerslag widget fails to load as it’s in an iframe pointing to http but the page is https. That’s not allowed as shown in this nice table at [WayBack] ssl – Insecure content in iframe on secure page – Stack Overflow by amol-ghotankar and richard:
page - iframe - status ----- - ----- - ----------- http - http - allowed http - https - allowed https - http - not allowed https - https - allowed
So I put it behind a simple Apache reverse proxy: https://www.pluimers.com/maps.weerslag.nl/GratisRadar/1201/864/verwacht?zoom=10:
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <Location /maps.weerslag.nl> | |
| ProxyPass http://maps.weerslag.nl | |
| ProxyPassReverse http://maps.weerslag.nl | |
| Require all granted | |
| </Location> |
If they still haven’t fixed their https access, I need to dig deeper into this.
When writing this [Arhive.is] https://maps.weerslag.nl/GratisRadar/1201/864/verwacht?zoom=10 gave a 404 and http://maps.weerslag.nl/GratisRadar/1201/864/verwacht?zoom=10 misbehaved behind the proxy:
–jeroen
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Posted in *nix, Apache2, Development, Power User, Web Development | Leave a Comment »
Debugging a Delphi – Format and Pointers/Hex Values (Memory Overwrite) – Stack Overflow
Posted by jpluimers on 2021/01/12
A long time ago (Delphi XE2 era), David Dubois and I helped out Doug find either the cause or a workaround of a memory overwrite in a 32-bit application.
The problem was that a call to Format for a pointe or hex value would give corrupt results, but with a regular integer value it would succeed.
Doug created an example [WayBack] overwriting some memory to simulate the problem.
I provided some steps [WayBack] to help trace such cases down.
In the and a rebuild – first withut madExcept, later with madExcept turned on again – solved the problem.
Likely this was the Delphi IDE becoming corrupt, something which I have seen intermittently over the last two decades.
Be sure to read both answers at [WayBack] delphi – Format and Pointers/Hex Values (Memory Overwrite) – Stack Overflow
–jeroen
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Roderick Gadellaa on Twitter: simple app that (re)sets the volume of the TV to 8% of the max volume every time you turn it on.
Posted by jpluimers on 2021/01/08
[WayBack] Roderick Gadellaa on Twitter: “In case anyone who owns an Android TV is interested: I’ve built a (very, very) simple app that (re)sets the volume of the TV to 8% of the max volume every time you turn it on. #androidtv #tools…”
[WayBack] Roderick Gadellaa on Twitter: “Some instructions: – You have to sideload it (google is your friend: “how to sideload app on android tv”) – You have to start the app once. It won’t show up on Home, so go to Settings > Apps > TvVolsetr > Open – Android TV 7.0 Nougat or higher required”
[WayBack] Roderick Gadellaa auf Twitter: “Some instructions: – You have to sideload it https://t.co/8aK0bmXXFl – You have to start the app once. It won’t show up on Home, so go to Settings > Apps > TvVolsetr > Open – Android TV 7.0 Nougat or higher required”
Follow only the images links from [Archive.is] “how to sideload app on android tv” – Google Search, as the others point to phishing sites.
This image link for instance is useful: [WayBack] How to Sideload Apps on Android TV: Android TV is an excellent product for anyone who wants to expand their current living room setup—it makes easy work of streaming most content, has a slew of games (that are actually worth playing), and is relatively inexpensive. But what happens when an app you want on your TV isn’t available for your device?
Download: [WayBack] tvVolsetr.apk
–jeroen
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Why a study with only 7 respondents can be good – from Dutch paper “De Volkskrant”
Posted by jpluimers on 2021/01/07
[Archive.is] Waarom een onderzoek met maar 7 respondenten toch goed kan zijn | De Volkskrant: Denkfouten in het hedendaags ontwerp gefileerd door innovatie-expert (en cabaretier) Jasper van Kuijk. Deze week: gebruikstest.
TL;DR
Quantitative studies often require large numbers of respondents, but quantitative studies can be done with a very small group.
While quantitative studies often will get you just one result (I rate this application a 7 out of 10, or with this A/B change, click through increases by 5%), qualitative studies will get you much more specific comments like “the main menu is cluttered”, or “the design is slick” (translated from the Image in the article).
Extensive research was done for a 2003 published paper [Archive.is] Beyond the five-user assumption: Benefits of increased sample sizes in usability testing which you can read as PDF [WayBack].
Via
[WayBack] Jasper van Kuijk on Twitter: “Mijn ‘Hoe moeilijk kan het zijn?’ van vandaag. Waarom voor gebruiksgemak een gebruikstest met 7 participanten nuttiger is dan een enquête met 1500 respondenten. #HMKHZ via de @volkskrant”
Related
[WayBack] Ionica Smeets on Twitter: “Hear, hear! Aldus een wiskundige die heel wat jaren nodig had om waarde van kwalitatief onderzoek in te zien…”
and
- [WayBack] Bernie Wolf on Twitter: “Dat geldt zeker voor meten van gebruiksgemak (customer experience, cx) maar ook wel in het algemeen. Die eeuwige spanning tussen validiteit van response en kwantificeerbaarheid/reproduceerbaarheid. Offer bij twijfel dat laatste maar op.”
- [WayBack] Jasper van Kuijk on Twitter: “In gebruikstesten en user-centred design in z’n algemeenheid wordt veel gebruik gemaakt van kwalitatieve onderzoekstechnieken. De discussies die je dan krijgt gelden inderdaad breder, ook buiten UCD/CX/UX.”
and
- [WayBack] NicolettevCronenburg on Twitter: “Herkenbaar artikel. Het is een regelmatige discussie die ik met onze IT’ers voer. Weinig participanten wordt gezien als onbetrouwbaar, maar ook klantreacties trekken ze in twijfel: “de klant kan het wel handig vinden maar ik niet”. Onze marketeers snappen het wel, nu IT nog ;-).”
- [WayBack] Jasper van Kuijk on Twitter: “Ik ken het inderdaad van de meer engineering-achtige disciplines ook, maar vond het opmerkelijk dat je het juist ook bij marketeers ook tegen komt, die toch ook dicht tegen de gebruiker (ok, de koper) staan.”
- [WayBack] NicolettevCronenburg on Twitter: “zeker opmerkelijk, van een marketeer verwacht je klant-denken. Gelukkig heb ik een forse verbetering gezien in de laatste 2 jaar tav gebruikersonderzoeken. Maar zodra het gaat om marketingcommunicatie zie ik vooral weer het product (inside-out) centraal staan ipv de klant.”
- [WayBack] Jasper van Kuijk on Twitter: “Ik denk dat ook marketeers de afgelopen jaren inderdaad veel meer zijn gaan doen met kwalitatief onderzoek.… “
- [WayBack] Jeroen Pluimers on Twitter: “Ik herinner me nog de test labs van midden jaren 90 vorige eeuw. Dat je key users kon observeren. Met slechts enkele gebruikers kon je zo heel snel goede feedback krijgen.”
- [WayBack] Jasper van Kuijk on Twitter: “Die usability labs gaven wel een soort gevoel van serieus genomen worden als usability specialist, maar volgens is zo’n lab steeds minder gangbaar. Hoeft denk ik ook niet per se meer, je kan bijna alles met een paar camera’s en een laptop. Ja, doorkijkspiegel is fijn ;-)”
- [WayBack] Jeroen Pluimers on Twitter: “Precies. En ook dat heel veel van wat we nu doen, eigenlijk al heel oud is, maar dan in een ander jasje. Als je een beetje door de technologie heen prikt, zit hier ontzettend veel in wat je heel breed op het traject van software ontwikkeling kunt leggen: …”(video by Kevlin Henney below the fold)
–jeroen
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Posted in Development, Software Development, Testing, Usability, User Experience (ux) | Leave a Comment »
The Wiert Corner - irregular stream of stuff 