Plua

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For PLUA, see Party of the United Struggle for Africans in Angola.

Plua is a port of the programming language Lua 5.0.3, along with a small IDE, for the Palm Computing platform. Lua is a programming language designed at TeCGraf, the Computer Graphics Technology Group of PUC-Rio, Brazil. Plua includes some extensions to Lua to better support the Palm platform.

Development has ceased on Plua, and the latest stable version of Plua 2.0 can only be downloaded from a discussion board.[1] The prior version, Plua 1.1, is a port of Lua 4.0. The extensions differ somewhat between versions. The new version is thus sometimes called Plua 2 to avoid confusion.

Language resources[edit]

Plua has some special functions, or extensions, to support the Palm platform, including:

Sample code, Plua 1[edit]

The compiler and interpreter is approximately 150 KB, and the compiled helloworldApp.prc shown below is approximately 2 KB.

The classic hello world program (in the old version) can be written as follows:

  1.   -- HelloWorld.lua 
  2.   ptitle("Hello World") 
  3.   print ("Hello, world!") 
  4.   pevent() 

This text will be saved as a normal memo in the Palm, and executed by tapping the "Run" button in the IDE. Alternatively, the program can be compiled into a PRC (Palm OS Program File, which is executable on any Palm Platform, provided that the runtime program is present) from the same IDE.

A breakdown of the program:

Sample code, Plua 2[edit]

The equivalent program with the new extensions can be written as follows:

  1.  -- HelloWorld.lua 
  2.  gui.title 'Hello world' 
  3.  print 'Hello world!' 
  4.  gui.event(ioPending) 

A breakdown of the program: The first line comment is the same as before, but the rest is a little different.

See also[edit]

References[edit]

External links[edit]