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The import android.support cannot be resolved

...ort Library has been added to your dependencies. Rebuild your project and now everything should work. Further reading regarding this Question: Support Library - Android Dev Recent Support Library Revisions Support Library Packages What is an Android Support Library? How Android Support Library ...
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bodyParser is deprecated express 4

...structor has been deprecated, as of 2014-06-19. app.use(bodyParser()); //Now deprecated You now need to call the methods separately app.use(bodyParser.urlencoded()); app.use(bodyParser.json()); And so on. If you're still getting a warning with urlencoded you need to use app.use(bodyParser....
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Run a callback only if an attribute has changed in Rails

...saving to the database, or within the before_save filter: changes should now be changes_to_save changed? should now be has_changes_to_save? changed should now be changed_attribute_names_to_save <attribute>_change should now be <attribute>_change_to_be_saved <attribute>_changed? s...
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Use of 'prototype' vs. 'this' in JavaScript?

...type is TOTALLY DIFFERENT from the __proto__ property. In our example, 'A' now has TWO properties called 'prototype' and __proto__ . This is a big confusion for people. prototype and __proto__ properties are in no way related, they're separate things pointing to separate values. You may wonder: Why...
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Is there a MySQL option/feature to track history of changes to records?

...ing relatively painless to implement - your existing code doesn't need to know about the triggers and audit stuff. If the business requirement is "show me what the state of the data was on a given date in the past", it means that the aspect of change over time has entered your solution. Whilst you...
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Chrome: timeouts/interval suspended in background tabs?

I was testing the accuracy of setTimeout using this test . Now I noticed that (as expected) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on ther...
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Undo a merge by pull request?

Someone accepted a pull request which they shouldn't have. Now we have a bunch of broken code merged in. How do you undo a pull request? I was just going to revert the changes to the commit just before the merge, but I noticed that it merged in a bunch of commits. So now there are all these commits ...
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How to use Google App Engine with my own naked domain (not subdomain)?

... [Update April 2016] This answer is now outdated, custom naked domain mapping is supported, see Lawrence Mok's answer. I have figured it out! First off: it is impossible to link something like mydomain.com with your appspot app. This is considered a naked dom...
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How can I find the length of a number?

...ake its absolute value and adjust the sign afterwards. Update for ES2015 Now that Math.log10 is a thing, you can simply write const len = Math.ceil(Math.log10(num + 1)); share | improve this ans...
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How do I uniquely identify computers visiting my web site?

... code snippet. This document does not show how to implement it. I want to know how do I implement this so I can track unique users for my site. – Oliver Jul 27 '17 at 8:16 12 ...