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CALayer with transparent hole in it

I have a simple view (left side of the picture) and i need to create some kind of overlay (right side of the picture) to this view. This overlay should have some opacity, so the view bellow it is still partly visible. Most importantly this overlay should have a circular hole in the middle of it so i...
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Microsecond timing in JavaScript

...er of microseconds in the fractional (e.g. a value of 1000.123 is 1 second and 123 microseconds). now() is monotonically increasing. This is important as Date.getTime() can possibly jump forward or even backward on subsequent calls. Notably, if the OS's system time is updated (e.g. atomic clock sy...
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Javascript fuzzy search that makes sense

...arch JavaScript library to filter an array. I've tried using fuzzyset.js and fuse.js , but the results are terrible (there are demos you can try on the linked pages). ...
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iOS UIImagePickerController result image orientation after upload

...A UIImage has a property imageOrientation, which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good chance that this flag is being saved to the exif data in the uploaded jpeg image, but the program you use to view it is not honoring that flag. To rota...
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CSS triangle custom border color

...sure how to go about doing this. I would like to steer clear of javascript and css3 simply because of compatibility. I am trying to have the triangle have a white background with a 1px border (around the angled sides of the triangle) with color #CAD5E0. Is this possible? Here's what I have so far: ...
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How to refresh app upon shaking the device?

I need to add a shake feature that will refresh my Android application. 16 Answers 16 ...
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Is it possible to change only the alpha of a rgba background colour on hover?

...0.8); } a:hover div { background-color: rgba(var(--rgb), 1); } To understand how this works, see How do I apply opacity to a CSS color variable? If custom properties are not an option, see the original answer below. Unfortunately, no, you'll have to specify the red, green and blue values again...
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Why does this assert throw a format exception when comparing structures?

I'm trying to assert the equality of two System.Drawing.Size structures, and I'm getting a format exception instead of the expected assert failure. ...
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After array_filter(), how can I reset the keys to go in numerical order starting at 0

...d array_filter to remove entries that had only the value '' from an array, and now I want to apply certain transformations on it depending on the placeholder starting from 0, but unfortunately it still retains the original index. I looked for a while and couldn't see anything, perhaps I just missed...
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How to get complete address from latitude and longitude?

I want to get following values from Latitude and Longitude in android 21 Answers 21 ...