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Haskell Type vs Data Constructor
...m learning Haskell from learnyouahaskell.com . I am having trouble understanding type constructors and data constructors. For example, I don't really understand the difference between this:
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grep a tab in UNIX
...le '\t' , literal TABs (i.e. the ones that look like whitespace) are often converted to SPC when copypasting ...
– plijnzaad
Mar 7 '17 at 11:39
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
...orrectly.
The BufferedReader permits to read a text from file, with bytes converted in characters. It allows to read line by line.
There is no PrintReader, you have to choose another Reader implementation according to the format of your input.
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How can I check the system version of Android?
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Check android.os.Build.VERSION.
CODENAME: The current development codename, or the string "REL" if this is a release build.
INCREMENTAL: The internal value used by the underlying source control to represent this build.
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“:” (colon) in C struct - what does it mean? [duplicate]
What does :1 and :8 mean?
3 Answers
3
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Detect network connection type on Android
How do you detect the network connection type on Android?
13 Answers
13
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How would you implement an LRU cache in Java?
...ructures would you use? I've already implemented one using LinkedHashMap and Collections#synchronizedMap , but I'm curious if any of the new concurrent collections would be better candidates.
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“Diff” an image using ImageMagick
... approach, particularly when comparing images which are mostly grayscale:
convert '(' file1.png -flatten -grayscale Rec709Luminance ')' \
'(' file2.png -flatten -grayscale Rec709Luminance ')' \
'(' -clone 0-1 -compose darken -composite ')' \
-channel RGB -combine diff.png
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Determine if two rectangles overlap each other?
...akes the following inputs from the user to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectangles will exist parallel to the x and the y axis, that is all of their edges will have slopes of 0 or infinity.
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Set every cell in matrix to 0 if that row or column contains a 0
Given a NxN matrix with 0s and 1s. Set every row that contains a 0 to all 0 s and set every column that contains a 0 to all 0 s.
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