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Welcome to the Eiffel users mailing list where you can discuss topics on the Eiffel programming language and its various supporting tools.
Eiffel: What programming should be!
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Liberty Lover
,
Eric Bezault
10
Jul 18
Simple Graphify
If it does not figure out how to do it, you can ask a human to explain ;-) -- Eric Bezault <ericb@
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Simple Graphify
If it does not figure out how to do it, you can ask a human to explain ;-) -- Eric Bezault <ericb@
Jul 18
Alejandro Garcia
, …
rfo amalasoft.com
6
Jul 18
Why do we use prefixes for libraries?
So in Gobo's case, it seems it was a little bit of a) You wanted to make users' lives easier
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Why do we use prefixes for libraries?
So in Gobo's case, it seems it was a little bit of a) You wanted to make users' lives easier
Jul 18
Finnian Reilly
, …
Liberty Lover
3
Jul 18
Is there an existing Eiffel Studio library wrapper for zlib's crc32 function?
Finnian, You're right that there's nothing in the ISE base libraries — I checked the same
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Is there an existing Eiffel Studio library wrapper for zlib's crc32 function?
Finnian, You're right that there's nothing in the ISE base libraries — I checked the same
Jul 18
Finnian Reilly
,
Liberty Lover
3
Jul 18
Xpact-core: past the performance phase, now the correctness phase — still besting eXpat ×1.38
VERDICT is in! In a nutshell ... What I recommend instead (the constructive path) Since the verdict
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Xpact-core: past the performance phase, now the correctness phase — still besting eXpat ×1.38
VERDICT is in! In a nutshell ... What I recommend instead (the constructive path) Since the verdict
Jul 18
Bertrand Meyer
, …
Liberty Lover
5
Jul 17
My new AI book
I bought. I downloaded. I got a summary. The question remains: To AI-Eiffel or not AI-Eiffel.
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My new AI book
I bought. I downloaded. I got a summary. The question remains: To AI-Eiffel or not AI-Eiffel.
Jul 17
Liberty Lover
3
Jul 5
Applied Simple Eiffel - Simple Reel
FWIW: I can now point the AI and simple_reel.exe at any book, paper, or other written material and
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Applied Simple Eiffel - Simple Reel
FWIW: I can now point the AI and simple_reel.exe at any book, paper, or other written material and
Jul 5
Ulrich Windl
, …
Hubert Cater
6
Jul 4
Wondering: The most popular Eiffel application
Thanks and I did actually have a Built with Eiffel label on the games for the first 15 years that
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Wondering: The most popular Eiffel application
Thanks and I did actually have a Built with Eiffel label on the games for the first 15 years that
Jul 4
Eric Bezault
Jul 1
Gobo Eiffel 26.06 released
Hello, I just released Gobo Eiffel 26.06. This new version includes: -> support for once classes.
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Gobo Eiffel 26.06 released
Hello, I just released Gobo Eiffel 26.06. This new version includes: -> support for once classes.
Jul 1
Finnian Reilly
, …
Finnian Reilly
24
Jun 24
Finding a billion-user project for Eiffel: How DbC catches the security flaws that Rust misses
Xpact-core benchmark milestone: x2 eXpat throughput, same parsing window Hi everyone, I want to share
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Finding a billion-user project for Eiffel: How DbC catches the security flaws that Rust misses
Xpact-core benchmark milestone: x2 eXpat throughput, same parsing window Hi everyone, I want to share
Jun 24
Finnian Reilly
,
Eric Bezault
3
Jun 24
When the compiler error points the wrong way: a void-safety creation gotcha
Thanks for the explanation Eric. In Eiffel-Loop full class checking was getting in the way of what I
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When the compiler error points the wrong way: a void-safety creation gotcha
Thanks for the explanation Eric. In Eiffel-Loop full class checking was getting in the way of what I
Jun 24
Ulrich Windl
, …
Finnian Reilly
3
Jun 24
Eiffel, what's that, BTW? ;-)
When I tried out the fungenerator I got this !!!! > In 1985, the Eiffel Tower was officially
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Eiffel, what's that, BTW? ;-)
When I tried out the fungenerator I got this !!!! > In 1985, the Eiffel Tower was officially
Jun 24
Alejandro Garcia
, …
Ilgiz Mustafin
4
Jun 21
Is this the most up to date tutorial on Autoproof?
Thank you both. This is very helpful. Alejandro García F. (elviejo) https://elviejo79.github.io Too
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Is this the most up to date tutorial on Autoproof?
Thank you both. This is very helpful. Alejandro García F. (elviejo) https://elviejo79.github.io Too
Jun 21
Finnian Reilly
3
Jun 21
Stealing eXpat's lunch
Correcting an unfair advantage for eXpat tag counter I just realized I unintentionally gave the expat
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Stealing eXpat's lunch
Correcting an unfair advantage for eXpat tag counter I just realized I unintentionally gave the expat
Jun 21
Finnian Reilly
,
Jocelyn Fiat
2
Jun 16
Question about backing up Eiffel Studio execution parameters on estudio 25.12
In the execution parameters, look at the top right drop-down menu. Among other options, you have
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Question about backing up Eiffel Studio execution parameters on estudio 25.12
In the execution parameters, look at the top right drop-down menu. Among other options, you have
Jun 16
Alejandro Garcia
, …
Ulrich Windl
10
Jun 14
SCOOP: Do wait - ever conditions for expire
Well, pure logic is nice, but there's also the user: Assume the user made a mistake and the
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SCOOP: Do wait - ever conditions for expire
Well, pure logic is nice, but there's also the user: Assume the user made a mistake and the
Jun 14
Finnian Reilly
, …
"João M. Rocha"
10
Jun 12
Question on rationale for FORMAT_DOUBLE non-conforming inheritance of FORMAT_INTEGER
Yeah, I was implying the "we think you don't" :-) It's provocative, but I think it
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Question on rationale for FORMAT_DOUBLE non-conforming inheritance of FORMAT_INTEGER
Yeah, I was implying the "we think you don't" :-) It's provocative, but I think it
Jun 12
Bertrand Meyer
,
"João M. Rocha"
2
Jun 9
RE: [eiffel-users] Survey On Verification-Aware Programming
I agree with Bertrand that not mentioning Eiffel in an Eiffel group, specially on a Verification-
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RE: [eiffel-users] Survey On Verification-Aware Programming
I agree with Bertrand that not mentioning Eiffel in an Eiffel group, specially on a Verification-
Jun 9
Finnian Reilly
, …
Finnian Reilly
9
Jun 4
Zig as an Intermediate Language for EiffelStudio
Hi João that was precisely the video that inspired my discussion paper Zig as an Intermediate
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Zig as an Intermediate Language for EiffelStudio
Hi João that was precisely the video that inspired my discussion paper Zig as an Intermediate
Jun 4
Finnian Reilly
, …
Finnian Reilly
3
Jun 2
Why I Write on eiffel.org Blogs
Hi Alejandro you just register an account. It's free. Finnian How can I also publish in Eiffel.
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Why I Write on eiffel.org Blogs
Hi Alejandro you just register an account. It's free. Finnian How can I also publish in Eiffel.
Jun 2
Jimmy Johnson
,
Eric Bezault
11
Jun 2
Convert library to SCOOP
What I had in mind is lock passing. This is one of the trickiest mechanism in SCOOP, as explained
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Convert library to SCOOP
What I had in mind is lock passing. This is one of the trickiest mechanism in SCOOP, as explained
Jun 2
Jimmy Johnson
Jun 1
OPEN_ARGS and RESULT_TYPE ?
What are the OPEN_ARGS and RESULT_TYPE used in ROUTINE and descendants? jjj
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OPEN_ARGS and RESULT_TYPE ?
What are the OPEN_ARGS and RESULT_TYPE used in ROUTINE and descendants? jjj
Jun 1
Finnian Reilly
May 31
The Case for an EiffelStudio F_code Runtime SDK
The Case for an EiffelStudio F_code Runtime SDK Why a 4.7 MB redistributable runtime is the missing
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The Case for an EiffelStudio F_code Runtime SDK
The Case for an EiffelStudio F_code Runtime SDK Why a 4.7 MB redistributable runtime is the missing
May 31
Ian Joyner
, …
Ulrich Windl
7
May 31
Why people still don't understand OO
I think too many "OO tutorials" don't give you the full story, just some parts. But
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Why people still don't understand OO
I think too many "OO tutorials" don't give you the full story, just some parts. But
May 31
Finnian Reilly
May 28
Re: CloudFlare outage: the lesson that will not be drawn
Bertrand Meyer wrote 23 November 2025: I might sound like a broken record, but the CloudFlare outage
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Re: CloudFlare outage: the lesson that will not be drawn
Bertrand Meyer wrote 23 November 2025: I might sound like a broken record, but the CloudFlare outage
May 28
Ian Joyner
May 27
Article using Eiffel and DbC as example
Geoff has moved on from programming to monitoring the Australian electricity system. He still writes
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Article using Eiffel and DbC as example
Geoff has moved on from programming to monitoring the Australian electricity system. He still writes
May 27
Jimmy Johnson
,
rfo amalasoft.com
2
May 26
EV_RICH_TEXT into EV_GRID
Hi Jimmy Though I have never done such a thing, I suspect there might be some challenges but it might
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EV_RICH_TEXT into EV_GRID
Hi Jimmy Though I have never done such a thing, I suspect there might be some challenges but it might
May 26
Liberty Lover
,
Ian Joyner
5
May 20
Compare to Eiffel
“There is no such thing as AI. What we have is a math(s) function — a very expensive, sophisticated
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Compare to Eiffel
“There is no such thing as AI. What we have is a math(s) function — a very expensive, sophisticated
May 20
Alejandro Garcia
May 14
Why wasn't EiffelBase2 merged into EiffelStudio?
Nadia Polikarpova and Julian Tschannen did work on EiffelBase2 https://github.com/nadia-polikarpova/
unread,
Why wasn't EiffelBase2 merged into EiffelStudio?
Nadia Polikarpova and Julian Tschannen did work on EiffelBase2 https://github.com/nadia-polikarpova/
May 14
Finnian Reilly
May 13
New feature in Eiffel-Loop scons build system: self-contained environment variables in ECF files
New feature in Eiffel-Loop scons build system Self-contained exported environment variables in ECF
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New feature in Eiffel-Loop scons build system: self-contained environment variables in ECF files
New feature in Eiffel-Loop scons build system Self-contained exported environment variables in ECF
May 13
외계인 토리
May 12
Question about event driven design
Hello. I am a student learning object-oriented development through OOSC and Touch of Class. I have
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Question about event driven design
Hello. I am a student learning object-oriented development through OOSC and Touch of Class. I have
May 12