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How to design a multi-user ajax web application to be concurrently safe

...can not be less) than 123 the new value is accepted, a new version id of 124 generated. The new state-information "updated to version 124" and optionally new value foo are put at the beginning of the artifact x's ringbuffer (changelog/history) serverside mutex is released requesting artifact committ...
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Removing array item by value

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chart.js load totally new data

The API for chart.js allows one to edit points of the datasets loaded into it, for example: 19 Answers ...
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Differences between lodash and underscore [closed]

... 2045 I created Lo-Dash to provide more consistent cross-environment iteration support for arrays, st...
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How to create composite primary key in SQL Server 2008

I want to create tables in SQL Server 2008, but I don't know how to create composite primary key. How can I achieve this? 8...
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Cannot refer to a non-final variable inside an inner class defined in a different method

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How to find files that match a wildcard string in Java?

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Add line break to ::after or ::before pseudo-element content

I do not have access to the HTML or PHP for a page and can only edit via CSS. I've been doing modifications on a site and adding text via the ::after or ::before pseudo-elements and have found that escape Unicode should be used for things such as a space before or after the added content. ...
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How to delete/create databases in Neo4j?

Is it possible to create/delete different databases in the graph database Neo4j like in MySQL? Or, at least, how to delete all nodes and relationships of an existing graph to get a clean setup for tests, e.g., using shell commands similar to rmrel or rm ? ...
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Case objects vs Enumerations in Scala

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