With some help from several people and ISE support I got a producer cosnumer exampe passing STRINGs working.

When logging information in a multi threaded system I wanted one thread to handle all writing to a file. The difference from the Producer Consumer example is mainly that I pass a STRING in a queue instead of an INTEGER.

It seems to be some problems with the fiel attachemnts.

Introduction

Lately I have had time to improve the tool support for Eiffel configuration files written in the Pyxis format, by the introduction of syntax highlighting in the gedit text editor and tools for converting XML to Pyxis. For those that are not familiar, Pyxis is an alternative syntax for XML files inspired by the Python programming language.

Introduction

Although XML was designed to be a human readable data description language it does not compare well to other data description languages in terms of clarity and readability.

This really applies to all incarnations in all languages of higher order functions in Object Oriented languages.

I start using I/O in eiffel, and my first program doesn't work.

	make
	local
      input : PLAIN_TEXT_FILE
      output : PLAIN_TEXT_FILE
      internal : ARRAY[CHARACTER]
      i, j : INTEGER
    do
      io.putstring ("Welcome to file-io land!

These tests test the allocation performance of 3 passback variable options and the subsequent access time when retrieving the value back from the calling function.

The difficulty in a general solution arises with void safety.

I represent an adjacency list of graph G(V,E).

I've tested the system by an example of exception handling in Eiffel

 <eiffel>
feature {NONE} -- Initialization
	i:INTEGER
	x:REAL
	y:ARRAY[REAL]
	make
			-- Run application.
		do
			create y.make(1,2)
			io.put_string ("The item at position: ")
			io.read_integer
			i:=io.last_integer
			find
			io.put_string (" is: ")
			io.put_real (x)
			io.put_string ("%NReturn to make i

This is a short template of what one can do when dealing with the perfect storm of complication using attached variables. This issue can arise when you need to attempt to release a resource, e.g.

This is a quite basic but essential operation: Launch a command, and get its output in a string.

There are various solutions.

• One is to redirect the output to a temporary file, and then read its content. But this is not convenient, since it require disk access, and you can not always hide the process.