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Convert RGB to RGBA over white

...ales 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 that the colors actually match perfectly. share ...
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How to SSH to a VirtualBox guest externally through a host? [closed]

...n an office network? Is it due to security or? – mdo123 Aug 16 '17 at 18:02 1 Even knowing that ...
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Tuples( or arrays ) as Dictionary keys in C#

...ta = new Dictionary<myKey, string>() { {new myKey(1, 2, 3), "data123"}, {new myKey(4, 5, 6), "data456"}, {new myKey(7, 8, 9), "data789"} }; You also can use it in contracts as a key for join or groupings in linq going this way you never ever mistype order of Item1, Item2, Item3 ...
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How to write a simple database engine [closed]

...rt of each column to have the length of this column like "Adam", 1, 11.1, "123 ABC Street POBox 456" you can have it like <&RowHeader, 1><&Col1,CHR, 4>Adam<&Col2, num,1,0>1<&Col3, Num,2,1>111<&Col4, CHR, 24>123 ABC Street POBox 456<&RowTrailer...
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Why use strict and warnings?

... Borodin 123k99 gold badges6464 silver badges134134 bronze badges answered Nov 5 '11 at 23:21 moodywoodymoodyw...
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What is the difference between an expression and a statement in Python?

... 123 Expression -- from the New Oxford American Dictionary: expression: Mathematics a collecti...
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How do I create a readable diff of two spreadsheets using git diff?

...sxd OpenOffice.org .odt/.ods/.odp/.odg Open Document .wj2/wj3/wk3/wk4/123 Lotus 123 .wri Windows3.1 Write .pdf Adobe PDF .mht Web Archive .eml Exported files from OutlookExpress Regard, Andres share ...
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curl json post request via terminal to a rails app

...firstname","last_name":"lastname","email":"email@email.com","password":"app123","password_confirmation":"app123"}}' \ http://localhost:3000/api/1/users share | improve this answer | ...
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Why can't variable names start with numbers?

... If it had to be numbers+alpha, then you could still do String 0x123 = "Hello World". Unless you state that variable names are "numbers+alpha that don't parse to a valid numeric designation", and that's just silly. – eaolson Oct 11 '09 at 3:56 ...
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Two-dimensional array in Swift

... = 18 OR let myVar = 18 arr[0][1] = myVar Change sub array arr[1] = [123, 456, 789] OR arr[0] += 234 OR arr[0] += [345, 678] If you had 3x2 array of 0(zeros) before these changes, now you have: [ [0, 0, 234, 345, 678], // 5 elements! [123, 456, 789], [0, 0] ] So be aware tha...