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Getting the current page

...rollView.frame.size.width; NSInteger page = (scrollView.contentOffset.x + (0.5f * width)) / width; share | improve this answer | follow | ...
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Loop through an array of strings in Bash?

...ividual element of the array done # You can access them using echo "${arr[0]}", "${arr[1]}" also Also works for multi-line array declaration declare -a arr=("element1" "element2" "element3" "element4" ) ...
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How to share my Docker-Image without using the Docker-Hub?

... | edited Mar 19 '18 at 0:47 naXa 23.6k1414 gold badges140140 silver badges198198 bronze badges answer...
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CSS z-index paradox flower

...tp://jsfiddle.net/Kx2k5/1/ (successfully tested on Fx27, Ch33, IE9, Sf5.1.10 and Op19) CSS .item { /* include borders on width and height */ -webkit-box-sizing : border-box; -moz-box-sizing : border-box; box-sizing : border-box; ... } .i1:after { content: ""; ...
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Suppress command line output

...dout is file descriptor 1, and stderr is file descriptor 2 by convention. (0 is stdin, incidentally.) The 2>&1 copies output file descriptor 2 from the new value of 1, which was just redirected to the null device. This syntax is (loosely) borrowed from many Unix shells, but you do have to be...
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer

...rayBuffer(buf.length); var view = new Uint8Array(ab); for (var i = 0; i < buf.length; ++i) { view[i] = buf[i]; } return ab; } From ArrayBuffer to Buffer: function toBuffer(ab) { var buf = Buffer.alloc(ab.byteLength); var view = new Uint8Array(ab); for (var i...
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CSS: transition opacity on mouse-out?

... 202 You're applying transitions only to the :hover pseudo-class, and not to the element itself. .i...
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How to change column datatype from character to numeric in PostgreSQL 8.4

...nding on your data): alter table presales alter column code type numeric(10,0) using code::numeric; -- Or if you prefer standard casting... alter table presales alter column code type numeric(10,0) using cast(code as numeric); This will fail if you have anything in code that cannot be cast to num...
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Calculating distance between two points, using latitude longitude?

... height difference. If you are not interested in height * difference pass 0.0. Uses Haversine method as its base. * * lat1, lon1 Start point lat2, lon2 End point el1 Start altitude in meters * el2 End altitude in meters * @returns Distance in Meters */ public static double distance(double lat...
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?

... | edited Jan 7 '15 at 10:39 Yves M. 24.5k1919 gold badges8989 silver badges118118 bronze badges answe...