Completed test #5-implementing stack with NSMutableArray and Category

Ran into a bit trouble with pointers amd Array initialization but eventually make it work.

Still not sure whether it is better to implement the stack with linked list or using NSMutableArray.

Completed test #4 - opening local file

And filter files with extension

Linking menu with controller using Interface Builder:

Running app:

Completed test #3 - Regular Expression using RegexKit Lite

Steps to use the RegexKit Lite

1. Add the RegexKitLit.h/m files
2. Set the Other Linker Flags
3. Code

Completed test #2 - loading a file over the wire

The test succeeded.

Had some issue with Interface Builder caused by the tutorial I was following-it read like "drag the blue Object into the Interface Builder". It turned out it was from the "Library" that you drag the Object, and only if you narrow down the Library to "Cocoa->Objects and Controllers", you will see the "Object" at the top of the list.

Figures....this caused me to pull my hairs for over 2 hours. Devil is in the details.

Started to port my Go app to Objective C-test #1

So far completed basic drawing test.

And am researching another key piece of puzzle, Regular Expressions-Cocoa has limited regular expression support ...so perhaps I will have to reply on the open source library RegexKit Lite.