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Rails find record with zero has_many records associated [duplicate]

... Bah, found it here: https://stackoverflow.com/a/5570221/417872 City.includes(:photos).where(photos: { city_id: nil }) share | improve this an...
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Get the string representation of a DOM node

...n be set to replace the element with nodes parsed from the given string. https://developer.mozilla.org/en-US/docs/Web/API/Element/outerHTML share | improve this answer | fo...
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Error 1022 - Can't write; duplicate key in table

...es as the constraints on the old table. A fix was released in 2.3.0. See https://bugs.launchpad.net/percona-toolkit/+bug/1498128 for more details. share | improve this answer | ...
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How to force composer to reinstall a library?

...oject folder, sure) on Linux before: rm -rf vendor/ composer update -v https://www.dev-metal.com/composer-problems-try-full-reset/ share | improve this answer | follow ...
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Writing/outputting HTML strings unescaped

...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...
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Maven skip tests

...gt;test</scope> </dependency> (for more information refer to https://maven.apache.org/guides/mini/guide-attached-tests.html) Note that the project A produces secondary artifact with a classifier tests where the test classes and test resources are located. If you build your project wit...
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How to cast Object to its actual type?

... objects, AutoMapper will line up the keys with property names. more info https://github.com/AutoMapper/AutoMapper/wiki/Dynamic-and-ExpandoObject-Mapping share | improve this answer | ...
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How to select last two characters of a string

....com/jsref/jsref_substring.asp Adding MDN link as requested by commenter: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/substring share | improve this answer ...
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How to create ls in windows command prompt?

... in PATH env var). That (should) works! Edit: Something more consistent: https://superuser.com/questions/49170/create-an-alias-in-windows-xp share | improve this answer | f...
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How do I turn a C# object into a JSON string in .NET?

...is answer became inappropriate. Take a look at willsteel's answer. Source: https://msdn.microsoft.com/en-us/library/system.web.script.serialization.javascriptserializer.aspx. – rzelek Feb 1 '16 at 15:12 ...