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
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
Posted in *nix, *nix-tools, Keyboards and Keyboard Shortcuts, Power User | Leave a Comment »
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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Arjen Lubach in NTR | College Tour
Posted by jpluimers on 2017/05/22
Posted in LifeHacker, Power User, SocialMedia, YouTube | Leave a Comment »
“Btrfs rw-snapshots and noatime considered harmful” …
Posted by jpluimers on 2017/05/22
I’ve mounted nearly everything with noatime, doesn’t make sense most of the time to have atime updated.
Source: “BTRFS and find considered harmful?” Thats the headline a colleaqe suggested -…
–jeroen
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~650-thousand accounts exposed because of md5 hashing: Font sharing site DaFont has been hacked, exposing thousands of accounts | ZDNet
Posted by jpluimers on 2017/05/19
Over 98 percent of the passwords were cracked, thanks to the site’s poor password security.
No this isn’t just the hacked font…
Source: [WayBack] Font sharing site DaFont has been hacked, exposing thousands of accounts | ZDNet
via: [Archive.is] Font Sharing Site DaFont Has Been Hacked, Exposing Thousands of Accounts – Slashdot
–jeroen
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WannaCry — Decrypting files with WanaKiwi + Demos – Comae Technologies
Posted by jpluimers on 2017/05/19
[Archive.is] Working Windows XP & 7 demos. #FRENCHMAFIA: WannaCry — Decrypting files with WanaKiwi + Demos – Comae Technologies:
TL;DR;
DO NOT REBOOT your infected machines and TRY wanakiwi ASAP*!
*ASAP because prime numbers may be over written in memory after a while.
Via:[WayBack] A French researcher says he’s found a tool that could help some fraction of victims running that older Windows version. Just don’t reboot! WannaCry Ransomware Victims Might Have Some Hope–If They’re on Windows XP | WIRED
–jeroen
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Posted in Power User, Windows, Windows 7, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP | Leave a Comment »
People have been asking about the fact I use old Xeon boxes for my development…
Posted by jpluimers on 2017/05/19
An interesting discussion on Xeon based 2nd hand systems that are way cheaper than new ones:
[WayBack] People have been asking about the fact I use old Xeon boxes for my development platforms (and indeed more). I want to cover what I use, why I use them, … – Alan Cox – Google+
I still run a couple of HP XW6600 workstations with [WayBack] E5420 processors (of the [WayBack] Harpertown family) to host VMs on. Works splendid.
–jeroen
Source: [People have been asking about the fact I use old Xeon boxes for my developmen…1919
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The Wiert Corner - irregular stream of stuff 