September 2013
Intermediate to advanced
548 pages
12h 25m
English
Content preview from Programming Erlang, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 15Interfacing Techniques
Building systems often involves interfacing applications written in different programming languages with our system. We might use C for efficiency or writing low-level hardware drivers, or we might want to integrate a library written in Java or Ruby or some other programming language. We can interface foreign language programs to Erlang in a number of ways.
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By running the programs outside the Erlang virtual machine in an external operating system process. This is the safe way of doing things. If the foreign language code is incorrect, it will not crash the Erlang system. Erlang controls the external process through a device called a port and communicates with the external process through a byte-oriented communication ...
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