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When should I use the Visitor Design Pattern? [closed]

...ed, but does not answer the question which was not "how does it work" but "what are its use cases" – IronSlug Jun 16 '15 at 14:13  |  show 14 ...
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What package naming convention do you use for personal/hobby projects in Java?

...ood and useful and large, and then you realize you have a solid start for what may be a long-lived library or application. It may not be a library or an application that ever leaves your home network, but the point is, you've not thought ahead. That's the Denmark ghost of computer science -- alwa...
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Move branch pointer to different commit without checkout

... "what exactly is meant by arbitrary refs" - Branches are not the only kind of ref that points to a commit. There are tags, and you can also create arbitrary refs/whatevs/myref style refs yourself that are neither branches nor ...
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What do 'real', 'user' and 'sys' mean in the output of time(1)?

What do 'real', 'user' and 'sys' mean in the output of time? 6 Answers 6 ...
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Input widths on Bootstrap 3

... What you want to do is certainly achievable. What you want is to wrap each 'group' in a row, not the whole form with just one row. Here: <div class="container"> <h1>My form</h1> <p>How to mak...
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Git branching: master vs. origin/master vs. remotes/origin/master

... If I look at git log I see commit fa9sd8jasdf98 (HEAD -> master), what does this mean? What is HEAD in this instance? I thought I was currently "master" and were commiting to origin/master. I think I got something mixed up, could someone help calrify? EDIT UPDATE: I think I got it, is it co...
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How to exit in Node.js

What is the command that is used to exit? (i.e terminate the Node.js process) 19 Answers ...
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GCM with PHP (Google Cloud Messaging)

...our server can't verify a SSL certificate, use this technique to tell cURL what certificate to expect: unitstep.net/blog/2009/05/05/… or force cURL to use the latest cacert.pem from the cURL website using something like this: gist.github.com/gboudreau/5206966 – Guillaume Boud...
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Detecting an undefined object property

What's the best way of checking if an object property in JavaScript is undefined? 46 Answers ...
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Patterns for handling batch operations in REST web services?

What proven design patterns exist for batch operations on resources within a REST style web service? 8 Answers ...