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Def
===
The 'def' is where colm realy shines.
A 'def' is somewhere between a struct and a regular expression.
Again one example is much more clearer.
[source,chapel]
.assign.lm
----
include::code/assign.lm[]
----
After the compilation we can pipe some input to it's stdin.
[source,bash]
----
/opt/colm/bin/colm assign.lm
echo -e 'b=3;a=1;\n c=2;' |./assign
----
This gives us:
----
b->3
a->1
c->2
----
NOTE: this also illustrates how to read from 'stdin'.
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