By Yaron Minsky, Anil Madhavapeddy, Jason Hickey

This fast-moving educational introduces you to OCaml, an industrial-strength programming language designed for expressiveness, protection, and pace. during the book’s many examples, you’ll speedy learn the way OCaml stands proud as a device for writing speedy, succinct, and readable structures code.

Real global OCaml takes you thru the ideas of the language at a brisk velocity, after which is helping you discover the instruments and strategies that make OCaml a good and useful software. within the book’s 3rd part, you’ll delve deep into the main points of the compiler toolchain and OCaml’s basic and effective runtime system.

* research the principles of the language, equivalent to higher-order capabilities, algebraic facts varieties, and modules
* discover complex beneficial properties akin to functors, firstclass modules, and objects
* Leverage middle, a entire general-purpose general library for OCaml
* layout potent and reusable libraries, taking advantage of OCaml’s method of abstraction and modularity
* take on sensible programming difficulties from command-line parsing to asynchronous community programming
* research profiling and interactive debugging strategies with instruments corresponding to GNU gdb

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Here, you can see error mes‐ sages generated by Chrome and your own debugging output that you write with the console API. For more documentation on this, go to the Console API Reference. 28084; Debugging Chrome Apps | 15 Figure 1-11. A breakpoint set in debugger Figure 1-12. App paused at the breakpoint 16 | Chapter 1: Your First Chrome App Figure 1-13. 28084; Figure 1-14. Value displayed as JavaScript object There are additional console API calls for assertions, error logging, and getting a stack trace, which you can read about in the Console API Reference.

The options argument can have two optional Boolean keys. The first, create, means that the directory is created if necessary; if create is missing or false, the call fails if the directory isn’t there. If the second option, exclusive, is true, creation fails if the directory already exists. If neither option is true, the call succeeds only if the directory exists. Most commonly, you specify create: true when you want to create the directory if needed, which is what we did here, and no options if the directory must already exist.

Debugging Chrome Apps | 17 Chrome Release Channels As you might already know, there are four release channels for Chrome. These provide differing degrees of testing and update frequency. As releases mature, they make their way through the channels, which are described here: Stable Most tested, and intended to be used by most nondevelopers. These releases are updated about every six weeks, with minor updates more often. Beta A release due to become stable as soon as it’s fully tested, subjected to field testing as a beta, and had some remaining bugs fixed.

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