By Luke VanderHart

With greater than a hundred and fifty exact recipes, this cookbook exhibits skilled Clojure builders how you can resolve various programming initiatives with this JVM language. The ideas conceal every little thing from development dynamic web content and dealing with databases to community conversation, cloud computing, and complicated checking out thoughts. And greater than 60 of the world’s top Clojurians contributed recipes.
Each recipe contains code so that you can use at once, in addition to a dialogue on how and why the answer works, so that you can adapt those styles, techniques, and methods to occasions no longer in particular coated during this cookbook.
Master integrated primitive and composite facts structures
Create, advance and post libraries, utilizing the Leiningen tool
Interact with the neighborhood desktop that’s operating your application
Manage community communique protocols and libraries
Use options for connecting to and utilizing a number of databases
Build and retain dynamic web content, utilizing the hoop HTTP server library
Tackle software projects reminiscent of packaging, dispensing, profiling, and logging
Take on cloud computing and heavyweight dispensed information crunching
Dive into unit, integration, simulation, and property-based testing
Clojure Cookbook is a collaborative undertaking with contributions from many of the world’s top Clojurians, whose backgrounds diversity from aerospace to social media, banking to robotics, AI study to e-commerce.

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This includes the logic operations and and or, their negations, and shifts, to name a few. When working with bitwise operations, it can often be necessary to view the binary representation of an integer. Java’s Integer/toBinaryString can conveniently print out a binary representation of a number. Interestingly enough, core also includes a bit-set and a bit-test. These two operations set or test an individual bit position in an integer. Instead of working in multiples of two, as is necessary for operations like bit-and, you can operate by the index of the flag you’re interested in.

When operating on both doubles and rationals at the same time, care is advised; on account of the way type contagion works in Clojure, performing an operation over both types will cause the rational number to be coerced to a double. This transition isn’t necessarily inaccurate for a single operation, but the change in type introduces the possibility for inaccuracy to creep in. To maintain accuracy when working with doubles, use the rationalize function. This function returns the rational value of any number.

Permissions flag] (not= 0 (bit-and permissions (bitmap flag)))) (able-to? read-only :global-read) ;; -> true (able-to? read-only :global-write) ;; -> false Discussion Clojure provides a full complement of bitwise operations in its core library. This includes the logic operations and and or, their negations, and shifts, to name a few. When working with bitwise operations, it can often be necessary to view the binary representation of an integer. Java’s Integer/toBinaryString can conveniently print out a binary representation of a number.

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