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Transitions on the CSS display property

... You can concatenate two transitions or more, and visibility is what comes handy this time. div { border: 1px solid #eee; } div > ul { visibility: hidden; opacity: 0; transition: visibility 0s, opacity 0.5s linear; } div:hover > ul { visibil...
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Value of i for (i == -i && i != 0) to return true in Java

...000000000000000000 Taking the negative value is done by first swapping 0 and 1, which gives 01111111111111111111111111111111 and by adding 1, which gives 10000000000000000000000000000000 As you can see in the link I gave, Wikipedia mentions the problem with the most negative numbers and spec...
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Where Is Machine.Config?

...] should be equal to v1.0.3705, v1.1.4322, v2.0.50727 or v4.0.30319. v3.0 and v3.5 just contain additional assemblies to v2.0.50727 so there should be no config\machine.config. v4.5.x and v4.6.x are stored inside v4.0.30319. ...
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How should I validate an e-mail address?

...chnique for validating an e-mail address (e.g. from a user input field) in Android? org.apache.commons.validator.routines.EmailValidator doesn't seem to be available. Are there any other libraries doing this which are included in Android already or would I have to use RegExp? ...
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How to set versionName in APK filename using gradle?

...g on the build variant selected. Note that this solution works on both APK and App Bundles (.aab files). See Also: How to change the proguard mapping file name in gradle for Android project #Solution for Recent Gradle Plugin android { compileSdkVersion 22 buildToolsVersion "22.0.1" defau...
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How accurately should I store latitude and longitude?

... Actually, equator is best case. One latitude and one longitude degree are the same size at the equator (69 miles), but one degree of longitude shrinks to zero as it approaches either of the poles. Here's a very nice explanation: nationalatlas.gov/articles/mapping/a_latl...
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How do Trigonometric functions work?

So in high school math, and probably college, we are taught how to use trig functions, what they do, and what kinds of problems they solve. But they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you'...
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Use CSS3 transitions with gradient backgrounds

...h a background gradient, you have to set an opacity on a container element and 'transition` the opacity. (There have been some browser releases that supported transitions on gradients (e.g IE10. I tested gradient transitions in 2016 in IE and they seemed to work at the time, but my test code no lo...
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How do I verify that an Android apk is signed with a release certificate?

How can I check that an Android apk is signed with a release and not debug cert? 5 Answers ...
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Equivalent of String.format in jQuery

...r ASP.NET AJAX is available for your reference, so you can pick through it and include the parts you want to continue using into a separate JS file. Or, you can port them to jQuery. Here is the format function... String.format = function() { var s = arguments[0]; for (var i = 0; i < argume...