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Simple explanation of MapReduce?

...hem back in the same kind of list. suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say A = [1, 2, 3] foreach (item in A) A[item] = A[item] * 2 ...
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Can anyone explain this strange behavior with signed floats in C#?

... 388 The bug is in the following two lines of System.ValueType: (I stepped into the reference sourc...
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Creating Unicode character from its number

... 13 Answers 13 Active ...
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Convert from ASCII string encoded in Hex to plain ASCII?

... 233 A slightly simpler solution: >>> "7061756c".decode("hex") 'paul' ...
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Vertically align text to top within a UILabel

... CGRect myFrame = myLabel.frame; // Resize the frame's width to 280 (320 - margins) // width could also be myOriginalLabelFrame.size.width myFrame = CGRectMake(myFrame.origin.x, myFrame.origin.y, 280, myFrame.size.height); myLabel.frame = myFrame; Note that sizeToFit will res...
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Best approach to remove time part of datetime in SQL Server

... 23 Answers 23 Active ...
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JavaScript chop/slice/trim off last character in string

I have a string, 12345.00 , and I would like it to return 12345.0 . 25 Answers 25 ...
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From an array of objects, extract value of a property as array

... | edited Apr 19 at 13:50 Arsen Khachaturyan 5,90933 gold badges3232 silver badges3434 bronze badges ...
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How can I check if a single character appears in a string?

... Ömer Erden 4,58422 gold badges1818 silver badges3333 bronze badges answered Feb 3 '09 at 5:40 mP.mP. 16.5k99 gold badges6565 s...
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Is APC compatible with PHP 5.4 or PHP 5.5?

... 163 +500 Zend OPC...