The Wiert Corner – irregular stream of stuff

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

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Which hashing algorithm is best for uniqueness and speed? – Software Engineering Stack Exchange

Posted by jpluimers on 2017/10/04

Tested algorithms:

Source: [WayBack] Which hashing algorithm is best for uniqueness and speed? – Software Engineering Stack Exchange

via: [WayBack] Today’s topic of study: HashtablesMy view of hash tables is heavily influenced by an oral doctoral exam question my boyfriend in college had: “why or … – Lars Fosdal – Google+:

My view of hash tables is heavily influenced by an oral doctoral exam question my boyfriend in college had: “why or why not would you use a random number generator to dither an image?

–jeroen

I archived the non-wikipedia references:

Murmur2 graph:

Read the rest of this entry »

Posted in Algorithms, Development, Software Development | Leave a Comment »

A bit of Kylix history…

Posted by jpluimers on 2017/10/03

Chris Rolliston: +Larry Hengen The Kylix IDE was a fork of the Delphi IDE and used WineLib. It was the applications you built with the Kylix IDE that were QT based.

Via [WayBack] I don’t mean to Whine but, if WINE is mature enough, why doesn’t EMBT officially test and support WINE for development on Mac OS/X and Linux for… – Larry Hengen – Google+

There is a bit of C++BuilderX history as well (which was based on JBuilder).

–jeroen

 

Posted in Delphi, Development, History, Kylix, Software Development | Leave a Comment »

Building OpenSSL on Windows

Posted by jpluimers on 2017/10/03

Some very interesting links:

–jeroen

Posted in C, C++, Development, Software Development, Visual Studio C++ | Leave a Comment »

Mercury13/curl4delphi: A little libcURL binding for Delphi XE2+. Supports “easy” interface only. See wiki for more documentation.

Posted by jpluimers on 2017/10/03

Interesting: Mercury13/curl4delphi: A little libcURL binding for Delphi XE2+. Supports “easy” interface only. See wiki for more documentation.

via: Curl: Delphi binding [WayBack]

–jeroen

Posted in Delphi, Delphi XE2, Development, Software Development | Leave a Comment »

VM Memory Usage heuristic over-reporting on ESXi 6.5

Posted by jpluimers on 2017/10/02

Fixed in 6.5u1: [WayBack] VM Memory Usage heuristic over-reporting on ESXi 6.5

Via: [WayBack] Incorrect memory utlization for 1 VM Web Client… |VMware Communities

Hi – After upgrading my host to ESXi 6.5 and VCSA to 6.5 I have found that one of my VM’s shows all memory being utilized in the summary screen and when

–jeroen

Posted in ESXi6.5, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »

When your Windows 8.1 mouse cursor is invisible in the screen center on VMware Fusion

Posted by jpluimers on 2017/10/02

Remove the

Remove the “VMware Pointing Device” using “devmgmt.msc”

Somehow I have it happen every now and then on Windows (usually 8.1 x64) VMs running inside a VMware (usually Fusion) that the mouse cursor is stuck.

VMware Tools were already at the latest version and a plain reboot didn’t help.

It doesn’t matter if I was running full screen or Windows and altering these mouse settings did not change the behaviour:

  • Enable pointer shadow
  • Display pointer trails (long or short: does not matter)

I did enable Show location of pointer when I press the CTRL key which then indicated the mouse pointer was static at the screen center.

The only thing to get the mouse respond to mouse movement were these steps:

  1. Start Device Manager using devmgmt.msc
  2. Switch to the Devices by Connection view from the View menu
  3. Open these sub-trees:
    1. Your machine in this case my machine W81ENTX64VS2015
    2. ACPI x64-based PC
    3. Microsoft ACPI-Compliant System
    4. PCI Bus
    5. Intel 82371AB/EB PCI to ISA bridge (ISA mode)
  4. Now delete the VMware Pointing Device
  5. Reboot after Device Manager ask you to do so

After that my mouse cursor works fine.

Just in case you bump into a similar thing, but the above steps don’t help, here are some links with different steps that might work in your situation:

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Posted in Fusion, Power User, Virtualization, VMware, Windows, Windows 8.1 | Leave a Comment »

Raspberry Pi brexit – changing your locale away from GB when you’ve a different keyboard

Posted by jpluimers on 2017/10/02

A while ago I wrote about -bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) on fresh Raspbian on Raspberry

I thought my locale issues were solved and they sort of were. Until I had to logon locally and managed to get one or more of these characters in my password:

  • ~ (tilde)
  • @ (at)
  • # (hash)
  • \ (backslash)
  • | (pipe)
  • " (double-quote)

Then logon would fail locally but work via ssh. Go figure!

Lot’s of people outside the UK using their Raspberry Pi with keyboard and monitor will now say: you’ve the default GB keyboard layout and your keyboard is not GB.

Bingo!

This is how US keys look when using a GB keyboard layout:

Read the rest of this entry »

Posted in *nix, Debian, Development, Hardware Development, Linux, Power User, Raspberry Pi, Raspbian | Leave a Comment »

Reminder to self: brew update needs re-accepting the xcode license agreement

Posted by jpluimers on 2017/09/29

Even though I have accepted this before, I needed to accept it again:

$ brew-update-ugprade 
Error: You have not agreed to the Xcode license. Please resolve this by running:
  sudo xcodebuild -license accept
$ sudo xcodebuild -license accept
Password:
$ brew-update-ugprade

–jeroen

Posted in Apple, Development, Home brew / homebrew, Power User, Software Development, xCode/Mac/iPad/iPhone/iOS/cocoa | Leave a Comment »

On my research list: connecting Fritz!Box devices together into a virtual PBX

Posted by jpluimers on 2017/09/29

I’ve some Fritz!Box devices on various locations that each provide VoIP access and either ISDN or PSTN lines.

Wouldn’t it be cool to be able to join them together into a virtual PBX?

I’m not sure how it’s possible and what you need for it, so here are some links that should make my future research on this easier:

–jeroen

Posted in Fritz!, Gigaset, Internet, ISDN, LifeHacker, Power User, PSTN, Telephony, VoIP | Leave a Comment »

Siemens GigaSet DX600A TCP port 650 protocol looks like old-school AT commands…

Posted by jpluimers on 2017/09/29

While playing around with nmap to view some of my IoT^w LoT devices, I found out my Siemens GigaSet DX600A ISDN (yes: ISDN; I’m an old fart) has these two ports open:

PORT    STATE SERVICE VERSION
80/tcp  open  http    Siemens Gigaset A580, DX800A, or S450 VoIP phone http config
| http-methods: 
|_  Supported Methods: GET POST
|_http-server-header: 
| http-title: Site doesn't have a title (text/html).
|_Requested resource was http://dx600a-isdn.pso71.local/login.html
650/tcp open  telnet  Gigaset telnetd
MAC Address: 7C:2F:80:15:D6:10 (Gigaset Communications GmbH)
Device type: general purpose
Running: Linux 2.6.X
OS CPE: cpe:/o:linux:linux_kernel:2.6
OS details: Linux 2.6.13 - 2.6.32

I’m going to play with port 650 later as it looks like it supports an AT command protocol(on Windows the GigaSet QuickSync TAPI driver translates TAPI to AT commands) so it should be possible to do all kinds of cool stuff with it.

These links should help ans it should work with the DX800A as well:

–jeroen

Posted in DECT, Gigaset, ISDN, Power User, PSTN, Telephony | Leave a Comment »

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