Archive for the ‘Development’ Category
Posted by jpluimers on 2013/08/03
If you ever get something similar to
InvalidCastException: [A]Person cannot be cast to [B]Person.
then you are (or more precise: your process is) probably loading the same assembly twice, but from a different context.
.NET allows that, and for reason (side by side loading, appdomains, etc).
Delphi doesn’t (thanks Warren Postma for noticing). But a mistake you see quite often is that Delphi developers try to load the same Delphi type from both an EXE and a DLL wondering why they don’t match. If you want to spread your types in Delphi, then use BPLs (run-time packages) for that. BPLs are similar to .NET assemblies, but cannot be loaded in memory twice.
–jeroen
via c# – InvalidCastException for two Objects of the same type – Stack Overflow.
Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development, VB.NET, VB.NET 10.0, VB.NET 11.0, VB.NET 8.0, VB.NET 9.0, Visual Studio 11, Visual Studio 2005, Visual Studio 2008, Visual Studio 2010, Visual Studio and tools | Leave a Comment »
Posted by jpluimers on 2013/08/03
Thanks Warren Postma post posting this in #Programming to which I added a few context links:
The rather cool programming language APL introduced in a video/film from 1975. Read the rest of this entry »
Posted in APL, Development, Keyboards and Keyboard Shortcuts, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2013/07/31
I’ve been using a few cloud storage / online backup providers for a while on Mac and Windows now, with the primary goals of
- being able to sync data between machines
- having a backup online
Here are some pros/cons. Read the rest of this entry »
Posted in Cloud Apps, Development, DropBox, Encoding, Internet, Power User, SocialMedia, Software Development, Unicode | 4 Comments »
Posted by jpluimers on 2013/07/31
Wrote a small script that goes into my monthly crontab.
It gets ftp://ftp.internic.net/domain/named.cache into /var/lib/named/named.cache.new, and logs when you need to copy it over into /var/lib/named/root.hint
Read the rest of this entry »
Posted in *nix, Development, Linux, Power User, Scripting, Sh Shell, Software Development, SuSE Linux, wget | Leave a Comment »
Posted by jpluimers on 2013/07/30
A while ago, I needed routines to work with absolute and relative paths on Windows.
These links were very useful:
- The Delphi TPath.IsDriveRooted function (I think it was introduced in Delphi 2010) serves as a IsPathAbsolute function
- Conversion between absolute and relative paths in Delphi – Stack Overflow showing how to use the Windows API functions PathRelativePathTo and PathCanonicalize functions declared in the ShLwApi unit to create AbsToRel and RelToAbs functions.
Thanks Andreas Rejbrand and David Heffernan for the last two!
–jeroen
via: Conversion between absolute and relative paths in Delphi – Stack Overflow.
Posted in Delphi, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Development, Software Development | 4 Comments »
Posted by jpluimers on 2013/07/26
During code reviews, I often see people do things like this:
if (not DirectoryExists(Path)) then
ForceDirectories(Path))
or this:
if (not TDirectory.Exists(Path)) then
TDirectory.CreateDirectory((Path))
Half a year ago, I wrote about .NET/C#: do not do “if (!Directory.Exists(path)) Directory.CreateDirectory(path))”. Read the rest of this entry »
Posted in Delphi, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Development, Software Development | 16 Comments »
Posted by jpluimers on 2013/07/25
Introduction
Over the last month or so, two incompatibilities between SVN and CodePlex have risen. I’m not sure which side caused it (see below for the error messages), who will fix it and when. Some details I bumped into.
CodePlex knows about both issue. I’m not sure the SVN team does yet about the second issue.
Recommendation
If you are using CodePlex with SVN/SubVersion, then you shoud stick to SVN versions lower than 1.8, or you will run into the error messages below.
So:
- Stick to version 1.7.x or lower of SVN and/or TortoiseSVN.
- DO NOT UPGRADE YOUR LOCAL CHECKOUT TO 1.8 OR HGHER!
(you cannot downgrade your local checkout to a lower version)
You can find older 1.7.x versions of SVN here:
Posted in CodePlex, Development, Source Code Management, Subversion/SVN, TFS (Team Foundation System) | Tagged: software, technology | 17 Comments »
Posted by jpluimers on 2013/07/25
Replay video’s can be viewed through streaming.embarcadero.com (where you can also find the other series, downloads, etc).
The SummerSchool 2013 replay videos are at streaming.embarcadero.com/summerschool2013.
The Q&A from today’s session on “Accessing local storage” demonstrating iOS specifics in Delphi XE4: Read the rest of this entry »
Posted in Delphi, Delphi XE4, Development, Software Development | Tagged: Delphi, embarcadero, iOS, OS, software, technology | Leave a Comment »
Posted by jpluimers on 2013/07/25
Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Delphi, Delphi XE2, Delphi XE3, Development, Software Development | 4 Comments »
The Wiert Corner - irregular stream of stuff 