Archive for the ‘Development’ Category
Posted by jpluimers on 2013/01/18
In most database index nodes are doubly linked to allow bi-directional scans. http://is.gd/8CMb7w, however not for InterBase and FireBird, there the reverse link isn’t used because it can be inconsistent due to write order of index pages.
The result is that in Firebird and InterBase, indexes are single-directional (either ascending or descending).
This is for your safety: it guarantees index consistency, even if because of EMP, your machine suddenly reboots after your tank fired a missile.
–jeroen
via Twitter / Avalanche1979: @SQLPerfTips For Firebird the ….
(Wow, did I really wrote 1200 blog posts?)
Posted in Database Development, DB2, Development, Firebird, InterBase, MySQL, OracleDB, PostgreSQL, SQL Server, SQL Server 2000, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 7, Sybase | Leave a Comment »
Posted by jpluimers on 2013/01/17
In the past you have seen my interest in multi-touch Windows devices (for instance the Dell’s S2340T 23″ Multi-touch monitor and Microsoft Surface 2.0).
This year a I expect vendors to deliver Windows 8 based computers that resemble a lot of the Microsoft PixelSense (formerly “Microsoft Surface”) technology:
- 10 or more finger touch
- guesture support
- multi-user
- capability to see more than just fingers (i.e. tags, or mobile controllers)
Lenovo seems the first to announce, with an expected availability in June 2013: IdeaCentre Horizon Table PC, with support for 10-finger, guesture, multiple-user, and two-hour battery life.
–jeroen
Posted in Development, Microsoft Surface on Windows 7, Power User, Software Development, Windows, Windows 7, Windows 8 | Tagged: battery life, computer, finger touch, gadgets, gaming, microsoft surface, technology, touch monitor, touch windows | Leave a Comment »
Posted by jpluimers on 2013/01/17
Even though the JavaRa tool is Windows-only, it is a tremendous help scraping old vulnerable versions of the Java Runtime Environment (JRE) from your systems and keeping only the fixed versions.
Regular JRE installs from Oracle/Sun will keep the old-and-vulnerable JRE versions.
(note that it seems the recent JRE update did not actually fix the vulnerability, just the exploit, and that a new Java vulnerability might already be exploited. Be sure to keep a watch upcoming Java updates for these).
JavaRa
JavaRa is an effective way to deploy, update and remove the Java Runtime Environment (JRE). Its most significant feature is the JRE Removal tool; which forcibly deletes files, directories and registry keys associated with the JRE. This can assist in repairing or removing Java when other methods fail.
JavaRa 2.1 (released 20130116) Read the rest of this entry »
Posted in Development, Java, Power User, Software Development, Windows, Windows 7, Windows 8, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP | Tagged: commandline arguments, internet, java jre, java runtime environment, java updates, java version, java vulnerability, software, technology | 1 Comment »
Posted by jpluimers on 2013/01/17
The PDF Archive at bitsavers.org has recently put online these raster image PDF scans from Turbo Assembler/Debugger (1993/1994) and Borland C++/Object Windows Library (1993)
Remnants of the past, usefull for RAD Studio, Delphi and C++ Builder developers wanting to know a bit of history (: Read the rest of this entry »
Posted in Assembly Language, BitSavers.org, Borland C++, C, C++, Delphi, Development, History, Pascal, Software Development, Turbo Assembler, Turbo Pascal, x86 | Tagged: assembler version, borland C++, computer, object windows library, programmers guide, software, technology, turbo assembler | 2 Comments »
Posted by jpluimers on 2013/01/17
Too bad the new StackOverflow rules actively discourage the kind of open questions like “c# – What are your thoughts on Raven DB?“.
They are being closed as “not constructive by casperOne♦ Nov 29 ’11 at 5:25”, which is a shame as these kinds of questions often reveal very valuable and balanced answers.
Right now I’m resarching what RavenDB could mean for storing documents. And yes, I know about the RavenDB licensing model: free for open source, pay for commercial use.
–jeroen
via: c# – What are your thoughts on Raven DB? – Stack Overflow.
Posted in .NET, C#, C# 4.0, C# 5.0, Database Development, Development, Pingback, Software Development, Stackoverflow | Leave a Comment »
Posted by jpluimers on 2013/01/16
Thanks to Danny Thorpe and John Skeet, I learned something about C# initialization order.
I knew there were differences between declarations having their initial value set at the point of declaration, and inside a constructor, but not about all of them.
So I observed the initialization order while stepping through code, but the virtual method behaviour was new to me.
Thanks Blaz Art for asking this at SO.
Danny Thorpe: Read the rest of this entry »
Posted in .NET, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Jon Skeet, Software Development | Leave a Comment »
Posted by jpluimers on 2013/01/10
In the .NET 1.x past, the WinForms designers in Visual Studio .NET and Visual Studio 2003 would put the C# or VB.NET code containing the form code as the InitializeComponent method of the top most class monolithic C# and VB.NET files that also contain the user code (for events and such).
As of Visual Studio 2005 (actually: Whidbey and higher), this code is based on partial classes. For each form (actually designable entity, but lets limit this to WinForms forms) you get a MyForm.cs and MyForm.Designer.cs
As a side note, with a bit of effort, you can generate the Windows Form Designer generated code yourself as this answer shows. This is for instance convenient when you have form definitions in a different technology and want to convert it to WinForms, WPF or another form of designer based .NET code.
I long time ago I wrote a short manual for co-workers on converting the monolithic files (for people interested, it is below).
Since then I found a couple of very interesting links: Read the rest of this entry »
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development, Visual Studio 11, Visual Studio 2002, Visual Studio 2003, Visual Studio 2005, Visual Studio 2008, Visual Studio 2010, Visual Studio and tools, WinForms | 1 Comment »
Posted by jpluimers on 2013/01/09
Until I realized that comparing two IEnumerables needed some extra thought, I wondered why Assert.AreEqual would not support them.
jrista pointed me in the right direction answering a question about c# – How does Assert.AreEqual determine equality between two generic IEnumerables?
The correct answer is “it doesn’t”, but that is really dense.
IEnumerables are just that: being generic or normal, they allow you to enumerate things. They can get you an enumerator (generic or not) that has a notion of Current (generic or normal) and such, but no knowledge of the underlying data.
Comparing them needs you to think about the enumeration and the underlying data at the same time. You can get two kinds of comparisons: Read the rest of this entry »
Posted in .NET, .NET 3.5, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 