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Run a callback only if an attribute has changed in Rails

... # ... end end The commit that changed ActiveRecord::Dirty is here: https://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae6c96faac5b4a3c81 Here is a blog post on these changes: https://www.ombulabs.com/blog/rails/upgrades/active-record-5-1-api-changes.html Here is the summary I made...
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How to Test Facebook Connect Locally

...'t work with this. For example - save achievements to FB servers. It wants HTTPS, so my localhost trick is not working :( – Kostadin Dec 8 '12 at 8:16 2 ...
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Has Facebook sharer.php changed to no longer accept detailed parameters?

...ost from the url OG meta tags. Use dialog/feeds instead of sharer.php https://www.facebook.com/dialog/feed? app_id=145634995501895 &display=popup&caption=An%20example%20caption &link=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2Fdialogs%2F &redirect_uri=https://develop...
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Store password in TortoiseHg

...nsion instead. See another answer here. You can change your push URL to https://username:password@hostname.com/repo. This is explained in Google Code's and Mercurial's FAQs. EDIT: Mercurial FAQ explains another way to do it: With Mercurial 1.3 you can also add an auth section to your hgrc fi...
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Is it valid to replace http:// with // in a ?

... A relative URL without a scheme (http: or https:) is valid, per RFC 3986: "Uniform Resource Identifier (URI): Generic Syntax", Section 4.2. If a client chokes on it, then it's the client's fault because they're not complying with the URI syntax specified in the RFC....
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Using new line(\n) in string and rendering the same in HTML

...e. Text will wrap when necessary, and on line breaks. More information on: https://www.w3schools.com/cssref/pr_text_white-space.asp – HakuteiJ Jul 17 '17 at 1:56 ...
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Why should I use Google's CDN for jQuery?

...entation in CDN providers, jQuery versions, and protocol usage (http vs. https), the chances of getting a CDN cache hit are shockingly low – and downloading from an external domain has the potential to perform not one, but three round trips (a DNS lookup, a TCP connection, and an HTTP GET)...
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What is the http-header “X-XSS-Protection”?

...w this header works. How this filter works in IE, More on this article, https://blogs.msdn.microsoft.com/ie/2008/07/02/ie8-security-part-iv-the-xss-filter/ The XSS Filter operates as an IE8 component with visibility into all requests / responses flowing through the browser. When the filter ...
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How to use jQuery in chrome extension?

...g line in your manifest.json "content_security_policy": "script-src 'self' https://ajax.googleapis.com; object-src 'self'", Now you are free to load jQuery directly from url <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script> Source: google doc ...
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Gradle buildscript dependencies

...cript dependencies: buildscript { repositories { maven { url("https://plugins.gradle.org/m2/") } } dependencies { classpath 'net.saliman:gradle-cobertura-plugin:2.3.2' classpath 'com.netflix.nebula:gradle-lint-plugin:latest.release' } } root level/core dep...