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Calculating distance between two points, using latitude longitude?

...rivate double distance(double lat1, double lon1, double lat2, double lon2, char unit) { double theta = lon1 - lon2; double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta)); dist = Math.acos(dist)...
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Ineligible Devices section appeared in Xcode 6.x.x

...6 my devices moved to greyed-out section Ineligible Devices and I can't select them as deploy target: 32 Answers ...
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Change Schema Name Of Table In SQL

... Create Schema : IF (NOT EXISTS (SELECT * FROM sys.schemas WHERE name = 'exe')) BEGIN EXEC ('CREATE SCHEMA [exe] AUTHORIZATION [dbo]') END ALTER Schema : ALTER SCHEMA exe TRANSFER dbo.Employees ...
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Multiple file upload in php

... what would the expected outcome be? Browser allowing multiple files to be selected? – Sven Oct 3 '12 at 17:41 9 ...
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How to install Xcode Command Line Tools

... Xcode 5.1 and OSX 10.9. (also works with Xcode 5.1.1 + OSX 10.10) xcode-select --install worked with version 2333, failed with version 2003. So, try xcode-select --install and if that does not work download as described below. In early February 2014 xcode-select --install has been reporting that...
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Which Radio button in the group is checked?

...g tri-state buttons, then I always set one button "IsChecked" as a default selection.) share | improve this answer | follow | ...
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MySQL get row position in ORDER BY

... Use this: SELECT x.id, x.position, x.name FROM (SELECT t.id, t.name, @rownum := @rownum + 1 AS position FROM TABLE t JOIN (SELECT @rownum := 0) r ORDER BY t.name)...
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How do I enumerate through a JObject?

.... I.e. you ((IEnumerable<KeyValuePair<string, JToken>>)obj).Select(...) instead of plain-old obj.Select(...); or at least that's what I found it one part of my code. – Adrian Ratnapala Nov 26 '14 at 9:26 ...
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How to change variables value while debugging with LLDB in Xcode?

...my_struct->a = my_array[3] expr -f bin -- (index * 8) + 5 expr char c[] = "foo"; c[0] IMPORTANT NOTE: Because this command takes 'raw' input, if you use any command options you must use ' -- ' between the end of the command options and the beginning of the raw input. ...
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jQuery set radio button

... Your selector looks for the descendant of a input:radio[name=cols] element that has the id of newcol (well the value of that variable). Try this instead (since you're selecting by ID anyway): $('#' + newcol).prop('checked',true)...