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# threads - team

This folder contains an implementation of a synchronous concurrency task
and it was coded for a contribution to the Rosetta Code website:

> "One of the concurrent units will read from a file named "input.txt"
> and send the contents of that file, one line at a time, to the other
> concurrent unit, which will print the line it receives to standard output.
> The printing unit must count the number of lines it prints. After the
> concurrent unit reading the file sends its last line to the printing unit,
> the reading unit will request the number of lines printed by the printing
> unit. The reading unit will then print the number of lines printed by the
> printing unit. This task requires two-way communication between the concurrent
> units. All concurrent units must cleanly terminate at the end of the program."

For more information see:

https://rosettacode.org/wiki/Synchronous_concurrency

When using XVM as the backend, this example must be run from the top-level
interpreter.

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

```logtalk
%versions
```

Start by loading the example:

```logtalk
logtalk_load(team(loader)).
```

Start the file reader and the line writer, each one running in its own thread:

```logtalk
team::start.
```

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a(0)
a(1)
a(2)
a(3)
a(4)
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a(9)
Number of lines: 10

true.
-->
