The Wiert Corner – irregular stream of stuff

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

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The Delphi interface reference counting compiler bug that will never get fixed as it is marked “as designed”

Posted by jpluimers on 2021/02/10

A long time ago, I write a question [WayBack] delphi – Should the compiler hint/warn when passing object instances directly as const interface parameters? – Stack Overflow in 2010.

It was marked by (now former) compiler engineer Barry Kelly [WayBack1/WayBack2] as bug:

It’s a bug. The conversion from instance to interface reference in RunLeakCrash should be to a temporary variable, keeping it alive for the duration of RunLeakCrash.

Added to that was a comment that this has happened since at least Delphi 6, so I filed a bug WayBack QualityCentral Report #: 90482 The compiler should keep a hidden reference when passing freshly created object instances directly as const interface parameters.

Just for years later, it was marked with “As Designed” which means it is never going to be fixed, especially since in the mean time Embarcadero got rid of most the senior Delphi R&D team members and went down the path of hiring contractors.

The problem is that I run into the two manifestations every now and then, and it usually takes a long time debugging to zoom into the actual location of the spots.

First manifestation: crash

This is the bug in the first manifestation (by now the root interface is IInterface instead of IUnknown, and you usually have an interface derived from it):

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Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Undocumented Delphi | Leave a Comment »

ApexSQL Refactor – Free SQL formatter | ApexSQL

Posted by jpluimers on 2021/02/09

The below configuration file haves [WayBack] ApexSQL Refactor – Free SQL formatter | ApexSQL produce quite OK formatted SQL, even for complex queries, not just for SQL Server.

So this is the second free tool I use from ApexSQL. The first one was ApexSQL, a free tool (SSMS add-in) for analyzing the execution plan of a SQL server query…

–jeroen

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Posted in Database Development, Development, Software Development, SQL, SQL Server | Leave a Comment »

A few links on Raymond Chen

Posted by jpluimers on 2021/02/09

I linked to [WayBack] the Old New Thing a lot from my blog, but never put in a few links to the author of all those posts: Raymond Chen.

So here you go:

Recurring topics on his blog:

He is on some videos to, for instance [Archive.is] One Dev Question with Raymond Chen – Why Are There 4 Functions for Converting Strings to GUIDs | One Dev Minute | Channel 9 (the actual mp4 video file through Archive.is).

You can find many more via raymond chen site:channel9.msdn.com – Google Search

—jeroen

Posted in Development, Windows Development | Leave a Comment »

How do I pretty-print JSON in Delphi? – Stack Overflow

Posted by jpluimers on 2021/02/09

For my archive: the [WayBack] How do I pretty-print JSON in Delphi? – Stack Overflow answer by [WayBack] Bob:

If you do not want to use any external library, and you’re using a Delphi XE5 or newer, there is a very handy TJson.Format() function in the REST.Json unit.

uses json, REST.Json;

{ ... }    

function FormatJSON(json: String): String;
var
  tmpJson: TJsonObject;
begin
  tmpJson := TJSONObject.ParseJSONValue(json);
  Result := TJson.Format(tmpJson);

  FreeAndNil(tmpJson);
end;

–jeroen

Posted in Delphi, Development, JavaScript/ECMAScript, JSON, Scripting, Software Development | 2 Comments »

Everything force rescan all volumes – via voidtools forum

Posted by jpluimers on 2021/02/08

Sometimes the Everything search tool gets out of sync with the actual contents on disk, so this tip from [WayBack] Everything 1.3.1.636b does not “refresh” – voidtools forum will rescan all volumes and update the database:

To rebuild the Everything database:

  • In Everything, from the Tools menu, click Options.
  • Click the Indexes tab.
  • Click Force Rebuild.

If that fails, you can always remove/add the volumes:

–jeroen

Posted in Everything by VoidTools, Power User, Windows | Leave a Comment »

Nikon D700 Firmware A:Ver.1.04/B:Ver.1.03 2013/05/21

Posted by jpluimers on 2021/02/08

Links for Nikon D700 Firmware A:Ver.1.04/B:Ver.1.03 2013/05/21

Via:  [Cache/Archive.is] Approved Memory Cards – D700

–jeroen

Posted in Nikon, Photography, Power User | Leave a Comment »

🔎Julia Evans🔍 on Twitter: “ethtool… “

Posted by jpluimers on 2021/02/08

[WayBack] 🔎Julia Evans🔍 on Twitter: “ethtool… “

With a lot of responses, including:

–jeroen

Posted in *nix, *nix-tools, Network-and-equipment, Power User | Leave a Comment »

Is there a way to increase the rate at which Gmail fetches mail from another account? – Web Applications Stack Exchange

Posted by jpluimers on 2021/02/05

[WayBack] Is there a way to increase the rate at which Gmail fetches mail from another account? – Web Applications Stack Exchange got a nice follow-up on Twitter:

This is way better than suggestions from the past: increase the frequency in which email arrives at the POP3 account.

Related: [WayBack] mobile – Can I control how often Gmail polls POP3 accounts for incoming mail? – Web Applications Stack Exchange

–jeroen

Posted in GMail, LifeHacker, Power User | Leave a Comment »

bash – How to get the primary IP address of the local machine on Linux and OS X? – Stack Overflow

Posted by jpluimers on 2021/02/05

[WayBack] bash – How to get the primary IP address of the local machine on Linux and OS X? – Stack Overflow (thanks [WayBack] Collin Anderson!):

I tried on OS X 10.13.6 (macOS High Sierra) and these two work fine:

ip route get 1 | awk '{print $NF;exit}'

and

ip route get 8.8.8.8 | head -1 | cut -d' ' -f8

The first one needs the $ back-slash escaped as bash alias; the second does not need that.

Related:

–jeroen

Posted in *nix, *nix-tools, Apple, bash, Mac OS X / OS X / MacOS, macOS 10.13 High Sierra, Power User | Leave a Comment »

Thread by @b0rk: “nmap i haven’t used nmap much except to scan my home network for fun so if i missed something really important i’d love to know! […]”

Posted by jpluimers on 2021/02/05

[WayBack] Thread by @b0rk: “nmap i haven’t used nmap much except to scan my home network for fun so if i missed something really important i’d love to know! […]”


i haven’t used nmap much except to scan my home network for fun so if i missed something really important i’d love to know!

also i need to find space in there somewhere for “if you don’t run nmap as root it can’t send icmp (ping) packets, it’s better to run nmap as root”

also be careful when nmapping in a network you don’t administer! it’s a popular hacking tool so using nmap is often discouraged / banned. i made all of the examples in this comic “nmap scanme.nmap.org” and “nmap your home network” for a reason :)

There are are quite a few interesting comments on the thread:

And it taught me about scanme.nmap.org: [WayBack] Go ahead and ScanMe!

Hello, and welcome to Scanme.Nmap.Org, a service provided by the Nmap Security Scanner Project and Insecure.Org.

We set up this machine to help folks learn about Nmap and also to test and make sure that their Nmap installation (or Internet connection) is working properly. You are authorized to scan this machine with Nmap or other port scanners. Try not to hammer on the server too hard. A few scans in a day is fine, but dont scan 100 times a day or use this site to test your ssh brute-force password cracking tool.

Thanks
–Fyodor

–jeroen

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Posted in *nix, *nix-tools, nmap, Power User | Leave a Comment »

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