Download Refactoring to Patterns by Joshua Kerievsky PDF

By Joshua Kerievsky

In 1994, layout styles replaced the panorama of object-oriented improvement through introducing vintage recommendations to ordinary layout difficulties. In 1999, REFACTORING revolutionized layout through introducing a good approach for making improvements to code. With the highly-anticipated REFACTORING TO styles, Joshua Kerievsky has replaced our method of layout via eternally uniting styles with the evolutionary technique of refactoring. This ebook introduces the speculation and perform of pattern-directed refactorings: sequences of low-level refactorings that permit designers to securely stream designs to, in the direction of, or clear of trend implementations. utilizing code from real-world tasks, Kerievsky files the considering and steps underlying over dozed pattern-based layout adjustments. alongside the best way he deals insights into development alterations and the way to enforce styles within the easiest attainable methods.

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Headers that aren’t “official” can always be used (sometimes they are prefixed with X- but they don’t have to be), so you can make use of this in your own applications if you wish. A good example, often seen on the Web, is when a tool such as Varnish has been involved in serving a response, and it adds its own headers. 1 varnish Connection: keep-alive That additional X-Varnish header shows me that Varnish served the request. info and on the Web. A great example comes from GitHub. v3 X-GitHub-Request-Id: 5EC19EE1:61C0:10B4CDB:55A0DAD5 X-Content-Type-Options: nosniff X-Served-By: 13d09b732ebe76f892093130dc088652 There are a few custom headers in this example but the X-RateLimit-* headers are particularly worth noting; they check whether too many requests are being made.

The keys and values are separated by colons, and each record at a given level is separated with a comma. It is also possible to show a list of items quite elegantly using JSON. info • bacon • cheese A JSON representation of this would simply be: ["eggs","bread","milk","bananas","bacon","cheese"] As you can see here, many of the keys in the previous example are optional, and mul‐ tiple values are enclosed with the simple square brackets. ” When to Choose JSON JSON gives a very clear indication of the original data structure and conveys the val‐ ues within, but doesn’t give us any specific information about the exact data types that were originally in use.

Of course it does happen, and if it does, you can always revoke your token and generate a new one. If you ever suspect that a token has been leaked, then do destroy it and generate another (something to bear in mind if your tokens are visible when demonstrating APIs). A POST request is used to create a new gist (GitHub has a RESTful API) and send JSON-formatted data along with it. In fact, this is a PHP array (because those are easy to understand and work with), which is then converted to JSON using json_encode().

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