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Black transparent overlay on image hover with only CSS?

... the img element itself, see. .image { position: relative; width: 400px; height: 400px; } Give the child img element a width of 100% of the parent and add vertical-align:top to fix the default baseline alignment issues. .image img { width: 100%; vertical-align: top; } As for th...
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Cocoa: What's the difference between the frame and the bounds?

... 908 The bounds of an UIView is the rectangle, expressed as a location (x,y) and size (width,height)...
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How to remove leading zeros from alphanumeric text?

...s leading zeroes, but leaves one if necessary (i.e. it wouldn't just turn "0" to a blank string). s.replaceFirst("^0+(?!$)", "") The ^ anchor will make sure that the 0+ being matched is at the beginning of the input. The (?!$) negative lookahead ensures that not the entire string will be matched....
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How do I convert a numpy array to (and display) an image?

... 240 You could use PIL to create (and display) an image: from PIL import Image import numpy as np w...
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How to change navbar collapse threshold using Twitter bootstrap-responsive?

I'm using Twitter Bootstrap 2.0.1 in a Rails 3.1.2 project, implemented with bootstrap-sass. I'm loading both the bootstrap.css and the bootstrap-responsive.css files, as well as the bootstrap-collapse.js Javascript. ...
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What are the differences between json and simplejson Python modules?

... wim 241k7070 gold badges435435 silver badges577577 bronze badges answered Apr 3 '09 at 6:59 Devin JeanpierreDe...
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Is “argv[0] = name-of-executable” an accepted standard or just a common convention?

When passing argument to main() in a C or C++ application, will argv[0] always be the name of the executable? Or is this just a common convention and not guaranteed to be true 100% of the time? ...
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Convert RGB to RGBA over white

...ha value. Example: 152 converts to an alpha value of (255 - 152) / 255 ~ 0.404 152 scales using (152 - 152) / 0.404 = 0 177 scales using (177 - 152) / 0.404 ~ 62 202 scales using (202 - 152) / 0.404 ~ 123 So, rgb(152, 177, 202) displays as rgba(0, 62, 123, .404). I have verified in Photoshop t...
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Permutations in JavaScript?

... 108 If you notice, the code actually splits the chars into an array prior to do any permutation, so...
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CSS Box Shadow Bottom Only [duplicate]

... Do this: box-shadow: 0 4px 2px -2px gray; It's actually much simpler, whatever you set the blur to (3rd value), set the spread (4th value) to the negative of it. share ...