By Daniel Higginbotham
For weeks, months?—nay!—from the very second you have been born, you've felt it calling to you. in the end you'll be united with the programming language you've been eager for: Clojure!
As a Lisp-style sensible programming language, Clojure permits you to write strong and stylish code, and since it runs at the Java digital desktop, you could make the most of the gigantic Java environment. Clojure for the courageous and precise deals a "dessert-first" strategy: you'll commence fidgeting with actual courses instantly, as you progressively acclimate to the summary yet strong positive factors of Lisp and practical programming. within you'll locate an offbeat, sensible advisor to Clojure, full of quirky pattern courses that capture cheese thieves and song glittery vampires.
Learn how to:
Wield Clojure's middle functions
Use Emacs for Clojure development
Write macros to switch Clojure itself
Use Clojure's instruments to simplify concurrency and parallel programming
Clojure for the courageous and real assumes no earlier event with Clojure, the Java digital computer, or practical programming. Are you prepared, courageous reader, to fulfill your precise future? seize your most sensible pair of parentheses—you're approximately to embark on an epic trip into the area of Clojure!
Covers Clojure 1.7Requires Java 1.6 or later.
About the Author
Daniel Higginbotham has been a certified programmer for eleven years, 1/2 that at McKinsey & corporation, the place he used Clojure to construct cellular and net functions. He has additionally contributed to the curriculum for ClojureBridge, a firm that provides loose, beginner-friendly Clojure workshops for ladies. Daniel blogs approximately existence and programming at http://flyingmachinestudios.com/, and will be came across on Twitter, @nonrecursive. He lives in Durham, North Carolina, along with his spouse and 4 cats.
Read or Download Clojure for the Brave and True: Learn the Ultimate Language and Become a Better Programmer PDF
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Additional info for Clojure for the Brave and True: Learn the Ultimate Language and Become a Better Programmer
Example text
B. A bitwise OR written as A | B, which for each corresponding bit in A and B, returns a “true” bit if at least one of the bits is “true,” otherwise it returns a “false” bit. c. A bitwise NOT written as ~A, which negates each bit in A (“true” bits become “false” and conversely). d. A bitwise XOR written as A ^ B, which for each corresponding bit in A and B, returns a “true” bit if one of the bits is “true” but not both, otherwise it returns a “false” bit. e. A bit shift operation written as A << m for a shift in the left direction of m bit spaces, or as A >> n for a shift in the right direction of n bit spaces.
Let us look at the binary to see what is happening more closely: A = 1011 1001 B = 1001 0001 53 C = 1011 1001 << 3 = 1100 1000 D = 1001 0001 >> 2 = 0010 0100 Can you see how the bits “shifted over” by the specified number? Note that when you shift bits “off” the memory region you are working with, they are lost—they do not “loop” back around. 6 Compound Bit Operators C++ provides compound bit operators as well. 6 Floating-Point Numbers Before concluding this chapter, we want to spend a little time giving you an overview of how floatingpoint numbers are represented.
Normalized means that there is only one non-zero digit before the radix point (we say radix point to be general since we may be working in number systems other than decimal; we do not call it a decimal point). 5. The exponent part of a floating-point number determines the range of the number (how big and small it can get) and the mantissa part of a floating-point number determines the precision of the number (the “step” size between two adjacent numbers on the number line). 56 6. 14 × 10 0 ), in binary the left most nonzero binary digit will always be 1 in normalized form.