ECO is so fast!

-
I spent the day (March 2005) training someone how ECO works.

Between 9:30 and 12:30 we went through the basics, how to create a model in a package (and why). We then covered the different component types, whilst making a simple client/server app.

Between 13:45 and 17:00 we went on to
  1. Create a server application
  2. Convert the client to connect to the server instead of directly to the DB
  3. Make the client synchronise with the changes from the server
  4. Create a web service which connected to the server for persistence
  5. Create a website which connected to the server for persistence

That's a lot of work to get done in 3.5 hours at the best of times, but when you are also explaining why everything is done the way it is then this is surely a reflection of just how quick it is to develop applications using ECO.

Everything we did was adhoc. I had no idea what the trainee wanted to cover before he arrived so everything was written from scratch. I'm quite frankly surprised that we managed to cover as much as we did!

Comments

Post a Comment

Popular posts from this blog

Connascence

-
I’ve just finished reading What every programmer should know about object oriented design . The first couple of sections are a bit useless really, but the 3rd section is very good. I particularly liked the section on the difference types of connascence in software. There’s some basic information about it here if you fancy a brief overview of what it is about. It’s a really good book, I recommend you read it! Should only take a day if you only read the 3rd section.
Read more

Convert absolute path to relative path

-
Today I needed to convert an absolute path to a relative path based on a specified base path. E.g. c:\a\b\c -> c:\a\b\c\d\file.txt = d\file.txt c:\a\b\c -> c:\a\file.txt = ..\..\file.txt c:\a\b\c -> c:\a\x\file.txt = ..\..\x\file.txt I am surprised there is nothing in the .NET framework so I had a hunt around and converted the code from the following URL ( http://www.vergentsoftware.com/blogs/ckinsman/default.aspx?date=2006-08-07 ) into C#.... private string RelativePath(string absolutePath, string relativeTo) { string[] absoluteDirectories = absolutePath.Split('\\'); string[] relativeDirectories = relativeTo.Split('\\'); //Get the shortest of the two paths int length = absoluteDirectories.Length //Use to determine where in the loop we exited int lastCommonRoot = -1; int index; //Find common root for (index = 0; index if (...
Read more

Printing bitmaps using CPCL

-
I've had no end of grief trying to print a PCX to a Zebra Printer using the CPCL printer language. Silly me, didn't notice the EG command (expanded graphics) so there was no need to convert my BMP to a PCX and then struggle with binary data. I still had a bit of grief working out how to print using the EG command because the documentation is quite frankly crap. The expected command format is EG {WidthInBytes} {HeightInPixels} {XPos} {YPos} {Data}\r\n The printer expects a 1 bit pixel matrix. So if pixel(0, 0) is set you will set "80" in the data. If pixel(0, 0) is set and pixel (7, 0) is also set you would sent "81". Basically what you need to do is to read each set of 8 horizontal pixels and then use bit operations to create a byte value 0..255, and then output this as hex 00..FF. Here's the routine :-) public void DrawBitmap(Bitmap bmp, int xPosition, int yPosition) { if (bmp == null) throw new ArgumentNullException("bmp"); ...
Read more