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Explain Morris inorder tree traversal without using stacks or recursion

...works: X / \ Y Z / \ / \ A B C D First, X is the root, so it is initialized as current. X has a left child, so X is made the rightmost right child of X's left subtree -- the immediate predecessor to X in an inorder traversal. So X is made the right child of B, then current ...
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How to change the docker image installation directory?

... With recent versions of Docker, you would set the value of the data-root parameter to your custom path, in /etc/docker/daemon.json (according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file). With older versions, you can change Docker's storage base...
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MySQL join with where clause

....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1219909%2fmysql-join-with-where-clause%23new-answer', 'question_page'); } ); Post as a guest ...
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boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术

...些知识有过了解 什么是多索引容器?为什么要使用它?如何使用? 接下来一一回答以上的问题。 想必大家在实际开发中一定多多少少会遇到以下的问题,我需要创建一个map,并且需要两种方式去索引,比如:创建一个<学号,...
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Unknown Column In Where Clause

... See the following MySQL manual page: http://dev.mysql.com/doc/refman/5.0/en/select.html "A select_expr can be given an alias using AS alias_name. The alias is used as the expression's column name and can be used in GROUP BY, ORDER BY...
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How to create a multi-tenant database with shared table structures?

Our software currently runs on MySQL. The data of all tenants is stored in the same schema. Since we are using Ruby on Rails we can easily determine which data belongs to which tenant. However there are some companies of course who fear that their data might be compromised, so we are evaluating othe...
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How to implement a tree data-structure in Java? [closed]

... Here: public class Tree&lt;T&gt; { private Node&lt;T&gt; root; public Tree(T rootData) { root = new Node&lt;T&gt;(); root.data = rootData; root.children = new ArrayList&lt;Node&lt;T&gt;&gt;(); } public static class Node&lt;T&gt; { priva...
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How to use SSH to run a local shell script on a remote machine?

...rameter, and it will execute the local script on the remote server. plink root@MachineB -m local_script.sh If Machine A is a Unix-based system, you can use: ssh root@MachineB 'bash -s' &lt; local_script.sh You shouldn't have to copy the script to the remote server to run it. ...
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How to check whether a script is running under Node.js?

...it: Edit: to your updated question: (function () { // Establish the root object, `window` in the browser, or `global` on the server. var root = this; // Create a reference to this var _ = new Object(); var isNode = false; // Export the Underscore object for **CommonJS*...
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SQL Group By with an Order By

... In all versions of MySQL, simply alias the aggregate in the SELECT list, and order by the alias: SELECT COUNT(id) AS theCount, `Tag` from `images-tags` GROUP BY `Tag` ORDER BY theCount DESC LIMIT 20 ...