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Further understanding setRetainInstance(true)

... code for FragmentRetainInstance.java (as of API 16): /* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * ...
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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?

...application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will ...
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Remove grid, background color, and top and right borders from ggplot2

I would like to reproduce the plot immediately below by using ggplot2. I can come close, but cannot remove the top and right borders. Below I present several attempts using ggplot2, including several suggestions found on or via Stackoverflow. Unfortunately I have not been able to get those sugges...
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Rounding float in Ruby

...er, I can only use .round which basically turns it into an int, meaning 2.34.round # => 2. Is there a simple effect way to do something like 2.3465 # => 2.35 ...
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How can I convert a Unix timestamp to DateTime and vice versa?

... | edited Jul 25 '17 at 11:12 user6269864 answered Oct 30 '08 at 14:42 ...
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How do I read CSV data into a record array in NumPy?

... | edited Mar 2 '12 at 15:05 Mike Graham 60.5k1212 gold badges8484 silver badges119119 bronze badges ...
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JavaScript function in href vs. onclick

... 278 Putting the onclick within the href would offend those who believe strongly in separation of c...
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How can I debug a .BAT script?

... Eric SchoonoverEric Schoonover 42.8k4242 gold badges146146 silver badges199199 bronze badges ...
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?

... answered Feb 3 '10 at 16:20 Eric LippertEric Lippert 599k164164 gold badges11551155 silver badges20142014 bronze badges ...
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How to capture Curl output to a file?

... answered Dec 6 '12 at 0:44 Alex2phpAlex2php 7,37911 gold badge1313 silver badges2222 bronze badges ...