Archive for the ‘Development’ Category
Posted by jpluimers on 2016/12/14
Back in the .NET days, Delphi had an FINITEFLOAT compile option that came without a single-character shortcut.
It was about the handling of infinite float and other special float values in cases like overflow and underflow (including +Inf, -Inf and [Wayback] NaN).
At first – in the [Wayback] Delphi 8 (Octane) era of which few people want to be reminded off – it was the [Wayback] undocumented counterpart of the [Wayback] 8087 exception mask in x86 mode. Hallvard Vassbotn wrote an article about it and Chee Wee Chua documented it before it got documented in Delphi 2009 (that coincidentally dropped .NET support in the compiler – go figure):
Whereas the native Delphi compilers had exceptions turned on, Microsoft compilers (including .NET) had them turned off, hence the compiler option.
Like most new Delphi features in this century, FINITEFLOAT didn’t come without quirks. Often these are fleshed out in 2-3 product releases, but this one wasn’t:
The FINITEFLOAT compile option didn’t have a single-character shortcut. This made it impossible to use the {$IFOPT ...} construct as IFOPT only works for single-character compiler options.
Which means you get questions like [Wayback] Why doesn’t {$ifopt FINITEFLOAT ON} compile? – Stack Overflow (I actually got into writing this article because I found a {$DEFINE FINFINITEFLOAT_ENABLED} in some pretty old code) and compiler enhancement requests like [WayBack] QualityCentral – Please enhance the IFOPT directive for long switch names. It’s easier to read (which will likely never bee fixed).
For completeness some more information about exception masks in the native compiler:
- In the past you could only set the exception mask as part of the full control word using [Wayback] Set8087CW, nowadays you can use [Wayback] SetExceptionMask.
- Next to a precision mask, there are five exception masks you can set, see for instance this table from the [Wayback] Simply FPU Chap.1 Control Word section:
PM (bit 5) or Precision Mask
UM (bit 4) or Underflow Mask
OM (bit 3) or Overflow Mask
ZM (bit 2) or Zero divide Mask
DM (bit 1) or Denormalized operand Mask
IM (bit 0) or Invalid operation Mask
–jeroen
Posted in 8087, Algorithms, Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 8, Development, Floating point handling, History, QC, Software Development | 1 Comment »
Posted by jpluimers on 2016/12/14
Some links; hopefully I can fill in more details later:
–jeroen
Posted in Delphi, Delphi 2007, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/12/13
Reminder to self: Fix #220 feature SKIP_FIRMWARE by jpluimers · Pull Request #221 · Hexxeh/rpi-update
It’s bash. How hard can it be.
(no that was a rhetorical question).
–jeroen
Posted in *nix, *nix-tools, Debian, Development, Hardware Development, Linux, openSuSE, Power User, Raspberry Pi, Raspbian, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2016/12/08
Windows 10 on ARM will supply a long-rumored feature: The ability to run 32-bit Win32/x86 desktop applications—Apple iTunes, Adobe Photoshop, Google Chrome, whatever—directly on the system, unchanged.
Wow, just wow.
[WayBack] ARM-Based Windows 10 Portable PCs!? Hell Yes! – Thurrott.com
Via:
Posted in ARM, Assembly Language, Development, Power User, Windows, Windows 10 | Leave a Comment »
Posted by jpluimers on 2016/12/08
SQL server % (modulo, not mod) operator doesn’t like floats (with reason).
You should get rid of the floats as they will give inaccurate results.
As a workaround, cast either through an integer or through a decimal: sql server modulo float – Google Search
CAST(CAST(TheInaccurateFloatValue AS decimal(38,19)) % ModuloValue AS float)
The decimal(38,19) is the maximum non-float precision you get.
( cast(dividend as integer) % divisor ) + ( dividend - cast(dividend as integer))
–jeroen
Posted in Algorithms, Database Development, Development, Floating point handling, Software Development, SQL, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | Leave a Comment »
Posted by jpluimers on 2016/12/08
How to: Migrate your SVN repository to Git – Nathan Hoad:
You’ve probably heard a lot about how awesome Git is from all the _cool_ people who are already using it. If you want to be part of the trendy crowd but feel tied down by your old Subversion repositories have no fear; Migrating all of those SVN repos to Git could not be easier **and** you get to keep the entire commit history of your project.
This is much better than what I did with FastMM:
Synced clone of FastMM SVN repository at http://sourceforge.net/projects/fastmm/ normally obtained through`svn checkout http://svn.code.sf.net/p/fastmm/code/ fastmm-code` but cloned by `git svn clone http://svn.code.sf.net/p/fastmm/code/ FastMM`
Source: jeroenp / FastMM — Bitbucket
Some more links for if I get stuck:
–jeroen
via: Stefan Glienke; For all the people migrating their svn repository to git – this guide really…
Posted in Development, DVCS - Distributed Version Control, git, Software Development, Source Code Management, Subversion/SVN | Leave a Comment »
Posted by jpluimers on 2016/12/07
I’ve been very busy with broken hardware and operating systems lately so today was the first chance to post about recent Version 1.8.1 History of Continua CI. During October and November the below builds got released.
For almost all of them, you will need to update your agents after installing the build.
v1.8.1.185, November 23rd, 2016
Changes
- Update: Added preliminary support for Visual Studio 2017 RC to MSBuild, VSTest, MSTest and Visual Studio actions
- Fix: Issue where ExecuteRepositoryServerSideScripts app setting was not being read preventing running of Git post commit scripts.
v1.8.1.178, November 22nd, 2016
Changes
- Fix: “changeset.style” file was missing from installer causing error when getting new changesets for new Mercurial repositories.
- Fix: Issue where Shared Resource Locks at the configuration level would be released before the end of the build, if Shared Resource Locks existed at the stage level and were released.
- Fix: Build version is now truncated to fit into the maximum field length of 128 characters.
- Update: Email publisher now supports wider range of secure sockets options. This also fixes an issue where you it would always try to use TLS if it was supported by the server.
v1.8.1.167, November 15th, 2016
Changes
- Fix: Issue where enabling a configuration would cause all time triggers in other configurations to stop working.
- Update: Any updates to loggers in the Continua CI Server service configuration file, such as enabling debug logging, are no longer reset when running the installer.
v1.8.1.165, November 14th, 2016
Changes
- Fix: Repository error status was being reset to “Ready” status when getting new changesets.
- Fix: Associated triggers are now updated to point to the new repository when repository edit requires it to be recreated.
- Fix: Concurrency issue with build event handlers causing incorrect build data to be used.
- Update: Bundled Mercurial used for repository cache has been upgraded to version 3.9.2
- Update: Improvements to speed when exporting files from agent repository cache to agent workspace.
- Update: Agent installer has been updated to allow it to be run silently and take additional command line parameters. The relevant parameters are:
- /usage (optional) – shows usage information.
- /silent (optional) – runs the setup in silent mode. Note that progress bars will still be displayed.
- /verysilent (optional) – runs the setup in completely silent mode. No UI is displayed.
- /log=”filename” (optional) – creates a log file with the specified filename.
- /dir=”x:\dirname” (optional) – overrides the default installation directory name.
- /serviceUser (required in silent modes) – the domain and user name of the service user e.g. domain\username.
- /servicePassword (required in silent modes) – the password of the service user.
- /serverHostName (optional) – the host name of the ContinuaCI service. Defaults to “localhost” if not provided.
- /serverPort (optional) – the port of the ContinuaCI service. Defaults to 9000 if not provided.
- /agentPort (optional) – a port for the agent being installed. Defaults to 9002 if not provided.
- /workspacePath (optional) – the local path to the agent workspace folder. Defaults to “C:\CI_AWS” if not provided.
- Update: Now showing the finished time for the last finished build rather than Never for the last queued/running build on List View dashboard.
- Update: JUnit parser now includes test case times.
- Update: Diagnostics report is now generated in the background to prevent timeouts.
- Update: Further improvements to build queue performance.
v1.8.1.121, October 11th, 2016
Changes
- Fix: Regression bug in v1.8.1.118 where Path Exists property collector plugin would always return false.
–jeroen
Posted in Continua CI, Continuous Integration, Development, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2016/12/07
Formy snippet archive (thanks Walter Prins for answering and Oliver Funcke for asking and elaborating on the answer):
in the case of error, you can get what would’ve normally been in the contentstream from the ExceptionObj.ErrorMessage property. So you can use something like the following if you want to get the content response regardless of http response code (untested):
var
FResponseStream: TStringStream;
FRequestURL, Content : String;
begin
//.... etc etc
try
FIdHTTP.Get(FRequestURL, FResponseStream);
Content := FResponseStream.DataString;
except
on E:EIdHTTPProtocolException do
Content := E.ErrorMessage;
end;
// At this point, "Content" contains the response body, both for
// successful (200) as well as other response codes.
//.... etc etc
end;
….
You can even do it simpler:
Response := IdHTTP.Get('http://host/path', [404]);
Source: delphi – Indy and REST – Can I prevent exceptions? – Stack Overflow
–jeroen
via:
Posted in Delphi, Delphi 10 Seattle, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 2 Comments »
The Wiert Corner - irregular stream of stuff 