By Fred Hebert
Erlang is the language of selection for programmers who are looking to write powerful, concurrent functions, yet its unusual syntax and sensible layout can intimidate the uninitiated. fortunately, there's a brand new weapon within the conflict opposed to Erlang-phobia: research You a few Erlang for nice Good!
Erlang maestro Fred Hebert starts off sluggish and eases you into the fundamentals: You'll know about Erlang's unorthodox syntax, its information buildings, its sort process (or lack thereof!), and easy practical programming ideas. as soon as you've wrapped your head round the basic stuff, you'll take on the true meat-and-potatoes of the language: concurrency, allotted computing, sizzling code loading, and the entire different darkish magic that makes Erlang one of these sizzling subject between today's savvy developers.
As you dive into Erlang's useful fable international, you'll examine about:
- trying out your purposes with EUnit and customary Test
- construction and freeing your functions with the OTP framework
- Passing messages, elevating blunders, and starting/stopping methods over many nodes
- Storing and retrieving info utilizing Mnesia and ETS
- community programming with TCP, UDP, and the inet module
- the straightforward joys and power pitfalls of writing allotted, concurrent applications
Packed with lighthearted illustrations and simply the correct mix of offbeat and functional instance courses, examine You a few Erlang for nice strong! is the precise access aspect into the sometimes-crazy, always-thrilling global of Erlang.
Read or Download Learn You Some Erlang for Great Good!: A Beginner's Guide PDF
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Extra info for Learn You Some Erlang for Great Good!: A Beginner's Guide
H">> 19> <
These reserved words are as follows: after, and, andalso, band, begin, bnot, bor, bsl, bsr, bxor, case, catch, cond, div, end, fun, if, let, not, of, or, orelse, query, receive, rem, try, when, and xor. Boolean Algebra and Comparison Operators We would be in pretty deep trouble if we couldn’t tell the difference between what’s small and big, or what’s true and false. Like any other language, Erlang has ways to let you use Boolean operations and to compare items. Boolean algebra is dirt simple: George Boole 1> true and false.
On line 4, we tried to unpack four values from the binary content. It throws an exception, because we have more than 4 segments—in fact, we have 12. So we tell Erlang that each variable on the left side will hold 24 bits of data using Pix1:24, Pix2:24, and so on. We can then take the first pixel and unpack it further into single color values: 6> <
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