For my own reference:
- Cleaning your ScanSnap iX500 – Fujitsu ScanSnap Community
- Document Preparation for Scanning – Fujitsu ScanSnap Community
–jeroen
Two ScanSnap ix500 tips: cleaning the scanner and preparing the paper for scanning
Posted by jpluimers on 2017/05/25
Posted in Fujitsu ScanSnap, Hardware, ix500, LifeHacker, Power User, Scanners | Leave a Comment »
Happy Geek Pride Day – Nerdious geekius computerus
Posted by jpluimers on 2017/05/25
Wishing you all a happy Geek Pride Day. Please hug your local Nerdious geekius computerus.
Big image [WayBack] of the PDF map based on this world image [WayBack]. Older Google Drawing.
–jeroen
via:
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Hmm, named failing at start on one of the secondaries: need to investigate this further
Posted by jpluimers on 2017/05/24
I was not too happy that this just happened after updating one of the DNS secondaries:
May 24 21:29:48 laurel systemd[1]: Starting LSB: Domain Name System (DNS) server, named... -- Subject: Unit named.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit named.service has begun starting up. May 24 21:29:49 laurel named[3173]: Starting name server BIND cp: cannot stat '/lib/engines': No such file or directory May 24 21:29:51 laurel named[3235]: starting BIND 9.10.4-P5 -t /var/lib/named -u named May 24 21:29:51 laurel named[3235]: running on Linux armv6l 4.3.3-6-raspberrypi #1 Wed Dec 16 08:03:35 UTC 2015 (db72752) May 24 21:29:51 laurel named[3235]: built with '--prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--localstatedir=/var' '--libdir=/usr/lib' '--enable-exportlib' '--with-export-libdir=/usr/lib' '--with-export-includedir=/usr/i May 24 21:29:51 laurel named[3235]: ---------------------------------------------------- May 24 21:29:51 laurel named[3235]: BIND 9 is maintained by Internet Systems Consortium, May 24 21:29:51 laurel named[3235]: Inc. (ISC), a non-profit 501(c)(3) public-benefit May 24 21:29:51 laurel named[3235]: corporation. Support and training for BIND 9 are May 24 21:29:51 laurel named[3235]: available at https://www.isc.org/support May 24 21:29:51 laurel named[3235]: ---------------------------------------------------- May 24 21:29:51 laurel named[3235]: adjusted limit on open files from 4096 to 1048576 May 24 21:29:51 laurel named[3235]: found 1 CPU, using 1 worker thread May 24 21:29:51 laurel named[3235]: using 1 UDP listener per interface May 24 21:29:51 laurel named[3235]: using up to 4096 sockets May 24 21:29:51 laurel named[3235]: ENGINE_by_id failed (crypto failure) May 24 21:29:51 laurel named[3235]: error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:233: May 24 21:29:51 laurel named[3235]: error:260B6084:engine routines:DYNAMIC_LOAD:dso not found:eng_dyn.c:467: May 24 21:29:51 laurel named[3235]: error:2606A074:engine routines:ENGINE_by_id:no such engine:eng_list.c:390:id=gost May 24 21:29:51 laurel named[3235]: initializing DST: crypto failure May 24 21:29:51 laurel named[3235]: exiting (due to fatal error) May 24 21:29:51 laurel named[3173]: ..failed May 24 21:29:51 laurel systemd[1]: named.service: Control process exited, code=exited status=1 May 24 21:29:51 laurel systemd[1]: Failed to start LSB: Domain Name System (DNS) server, named. -- Subject: Unit named.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit named.service has failed. -- -- The result is failed. May 24 21:29:51 laurel systemd[1]: named.service: Unit entered failed state. May 24 21:29:51 laurel systemd[1]: named.service: Failed with result 'exit-code'.
It’s in fact a manifestation of [Archive.is] Bug 1040027 – bind (named): fails to start since the introduction of namespaced openSSL packages
A fix is in the pipeline at [Archice.is] Request 496968 – openSUSE Build Service
However, that fix never made it to Raspberry Pi B (the original Rasberry Pi 1B) because that is armv6l and the bind build for that has failed early April 2017.
- https://build.opensuse.org/package/live_build_log/openSUSE:Factory:ARM/bind/standard/armv6l
- https://build.opensuse.org/packages/bind/job_history/openSUSE:Factory:ARM/standard/armv6l
That’s now in [Archive.is] Bug 1040697 – bind fails building for armv6l since 20170401 causing bugfixes not to make it to the wild.
–jeroen
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Delphi 10.2 Tokyo Godzilla ISO and other download links including hashes
Posted by jpluimers on 2017/05/24
I thought I already posted this, but since hashes were mentioned at [WayBack] Still can’t get Rad Studio 10.2 to install on my laptop. It’ll install now, but then it can’t load several BPLs and then it crashes before the IDE gets … – Phillip Woon – Google+
From [WayBack] cc.embarcadero.com/reg/delphi and [WayBack] Rad Studio Tokyo 10.2 | Board4All:
- 30722 RAD Studio, Delphi, C++Builder 10.2 Tokyo Web Install
- http://altd.embarcadero.com/download/radstudio/10.2/radstudio10_2_esd.exe
- ftp://ftpd.embarcadero.com/download/radstudio/10.2/radstudio10_2_esd.exe
- md5 – 7b2fe9e4a151ba5f90f665dc5da56734
- sha1 – f3b77e94423a70a9655f636f0798e532c9c063e2
- 30724 RAD Studio, Delphi, C++Builder 10.2 Tokyo ISO
- ftp://ftpd.embarcadero.com/download/radstudio/10.2/delphicbuilder10_2.iso
- http://altd.embarcadero.com/download/radstudio/10.2/delphicbuilder10_2.iso
- md5 – 8855db8d40993c18672f226bf395bfcd
- sha1 – bc750eeaf47e88d8e8bf3f2f4b954d0b6b165fbf
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Posted in Delphi, Delphi 10.2 Tokyo (Godzilla), Development, Software Development | 4 Comments »
Stack Overflow: Helping One Million Developers Exit Vim – Stack Overflow Blog
Posted by jpluimers on 2017/05/24
Apparently, this is not just a joke, but a real problem:
This morning, a popular Stack Overflow question hit a major milestone:
There is an in depth analysis at [WayBack] Stack Overflow: Helping One Million Developers Exit Vim – Stack Overflow Blog
Via: [WayBack] Fabian S. Biehn – Google+
–jeroen
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CheatSheet for Readline keyboard shortcuts for bash, bc, ftp, gnuplot, gpg, ksh, mysql, psql, python, smbclient, xmllint and zsh
Posted by jpluimers on 2017/05/24
Cool: someone made a CheatSheet for Readline keyboard shortcuts for bash, bc, ftp, gnuplot, gpg, ksh, mysql, psql, python, smbclient, xmllint and zsh [WayBack] of the GNU Readline library [WayBack].
–jeroen
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No, no, no, noooooo! – A Modern Hungarian Notation – Pixplicity
Posted by jpluimers on 2017/05/24
Some people still don’t get it:
We like to keep our code organized for readability, and use Hungarian Notation as prefixes where they clarify the purpose of a variable.
Source: A Modern Hungarian Notation – Pixplicity
My opinion on this:
- Don’t abbreviate. There is code completion for a reason.
- Put technical meanings at the end and functional meanings at the start of identifiers: software development is about functional stuff, not about technical stuff as the latter changes way faster than the former.
- You might consider using prefixes for arguments, local variables, instance variables and such, but often that works against you while refactoring stuff.
Been there, done that (;
Source: Boy, there sure is a lot of discussion about Hungarian Notation!
–jeroen
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Some interesting Delphi posts by Stefan Glienke – Spring4D maintainer
Posted by jpluimers on 2017/05/23
One of the Delphi programmers I keep an eye on is [WayBack] Stefan Glienke, the maintainer of the great Spring4D Delphi framework at spring4d.org.
His blog posts come in bursts, though his G+ posts are spreaded a bit more evenly.
Some of his recent posts and references:
- [WayBack] Delphi-PRAXiS – Einzelnen Beitrag anzeigen – Delphi Spring4D: Nullables
- [WayBack] Delphi sorcery: I wish I had dcc32 -dontmakemycodeslow – on making the state machine in
function TWhereIterator<T>.MoveNext: Boolean;less slow.- References: [WayBack] Code Optimization: Go For the Jugular – DelphiTools
- References: [WayBack] Sampling Profiler – DelphiTools
- [WayBack] Delphi sorcery: How to create an operator overload that only accepts nil – on accepting a typesafe nil for nullable types by not going the
Variantroute.- References: [WayBack] Delphi-PRAXiS – Einzelnen Beitrag anzeigen – Delphi Spring4D: Nullables
- Via: [WayBack] The joys of code optimization – Stefan Glienke – Google+
- Related: [WayBack] I have the following situation:I have enumerator classes that have a MoveNext and some internal state… – Stefan Glienke – Google+
- [WayBack] It seems I found another piece to the puzzle of generics causing big binaries and slow compile times:https://quality.embarcadero.com/browse/RSP-18080… – Stefan Glienke – Google+
- [WayBack] Sometimes the way how anonymous methods work is just annoying… – Stefan Glienke – Google+ “Because the compiler backs all anonymous methods inside of the same routine into the same instance this code just creates a circular reference of t to itself.”
- References: [WayBack] delphi – How are anonymous methods implemented under the hood? – Stack Overflow
- References: [WayBack] Entropy Overload: Anonymous method details
- References: [WayBack] Pascal gets closures before java – why hasn’t the world ended? : programming
- References: [Archive.is] Anonymous Methods in Delphi – Variable Binding Mechanism
- References: [WayBack] Anonymous methods in Delphi: the internals | The Programming Works
- [WayBack] Is there a reason why third party component vendors still ship dfm in binary format and did not convert them ever? – Stefan Glienke – Google+
- One old issue with the XE5 osx compiler, some forms in text format raised a “Bad file format” exception, fix was leave them binary
- [WayBack] Record comparer — Bitbucket
- [WayBack] Cool code of the day: … with TEnumerable.Range(1, 49).Shuffled doWriteln(Take(6).ToArray.ToString … – Stefan Glienke – Google+ with a very nice comment thread on random number generators
- [WayBack] Fisher–Yates shuffle – Wikipedia
- [WayBack] Linear congruential generator – Wikipedia
- [WayBack] PCG, A Family of Better Random Number Generators | PCG, A Better Random Number Generator
- 17 minute video: Stanford Seminar – PCG: A Family of Better Random Number Generators
- [WayBack] Pimp your random numbers with XorShift! – DelphiTools
- [WayBack] xoroshiro+/xorshift*/xorshift+ generators and the PRNG shootout
- a xoroshiro128+ Delphi version appears about 20% faster than Delphi’s Random function in 32bit (with a bit of MMX asm though): [Archive.is] https://bitbucket.org/egrange/dwscript/src/HEAD/Source/dwsRandom.pas
–jeroen
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CTRL control | CommitStrip
Posted by jpluimers on 2017/05/23
Posted in Power User, Windows | Leave a Comment »
What to change after a fresh Delphi (RAD Studio) installation…
Posted by jpluimers on 2017/05/23
Reminder to self: document what I change, and borrow some from this interesting thread:
–jeroen
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The Wiert Corner - irregular stream of stuff 