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ERROR 2006 (HY000): MySQL server has gone away
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max_allowed_packet=64M
Adding this line into my.cnf file solves my problem.
This is useful when the columns have large values, which cause the issues, you can find the explanation here.
On Windows this file is located at: "C:\Prog...
Deleting a Google App Engine application
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This issue has been fixed; see the docs here:
https://cloud.google.com/appengine/docs/standard/python/console/?csw=1#delete_app
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How to return a result (startActivityForResult) from a TabHost Activity?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
In Ruby, is there an Array method that combines 'select' and 'map'?
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I usually use map and compact together along with my selection criteria as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4]...
How to use a different version of python during NPM install?
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Synchronizing a local Git repository with a remote one
I want to synchronize my local repository with a remote one so that my local repository becomes a 100% copy of the remote one - meaning that if certain files differ in these repositories, we override the local ones with the remote ones, and if there are files in local repositories that do not exist ...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
内存优化总结:ptmalloc、tcmalloc和jemallocmemory-optimize需求系统的物理内存是有限的，而对内存的需求是变化的, 程序的动态性越强，内存管理就越重要，选择合适的内存管理算法会带来明显的性能提升。比如nginx， 它在每个连接accept...
How to have multiple CSS transitions on an element?
...background 1s ease-in-out 2s, width 2s linear; /* Safari */
}
Reference: https://kolosek.com/css-transition/
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How to expand/collapse a diff sections in Vimdiff?
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Maximum size of a element
...est support for custom canvas dimensions, check out canvas-size.
GitHub: https://github.com/jhildenbiddle/canvas-size
NPM: https://www.npmjs.com/package/canvas-size
From the docs:
The HTML canvas element is widely supported by modern and legacy
browsers, but each browser and platform combi...