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Java: Difference between PrintStream and PrintWriter
...s. But there has to be a difference, otherwise, there would have been only one class.
7 Answers
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Is memcached a dinosaur in comparison to Redis? [closed]
...they were thinking...oh wait maybe i should add ReJSON because natively no one cares about JSON in the world right
– PirateApp
Dec 20 '17 at 12:12
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How to grep for two words existing on the same line? [duplicate]
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Prescription
One simple rewrite of the command in the question is:
grep "word1" logs | grep "word2"
The first grep finds lines with 'word1' from the file 'logs' and then feeds those into the second grep which looks for lines containing...
Selectors in Objective-C?
...respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation?
8 Answers
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Regular expression for matching latitude/longitude coordinates?
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This one will strictly match latitude and longitude values that fall within the correct range:
^[-+]?([1-8]?\d(\.\d+)?|90(\.0+)?),\s*[-+]?(180(\.0+)?|((1[0-7]\d)|([1-9]?\d))(\.\d+)?)$
Matches
+90.0, -127.554334
45, 180
-90, ...
Remove empty array elements
...ore filtering it? I think setting a the second time just resets the first one.
– Cullub
Jan 31 '16 at 0:10
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How can I reverse the order of lines in a file?
... mentioning: tac (the, ahem, reverse of cat). Part of coreutils.
Flipping one file into another
tac a.txt > b.txt
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MySQL error code: 1175 during UPDATE in MySQL Workbench
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I mentioned that I already disabled the safe update option from the GUI which have the same effect as id I typed the command. However, thanks for your answer, but I already answered my question. Check my answer to know what was the ...
Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
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Technical differences are a consequence of the goal of each one (OpenJDK is meant to be the reference implementation, open to the community, while Oracle is meant to be a commercial one)
They both have "almost" the same code of the classes in the Java API; but the code for the virtua...
Is there a typical state machine implementation pattern?
... Very nice way to get started, at least beginning point for me. One remark, the first line of run_state() has a naughty "." that shouldn't be there.
– Atilla Filiz
Jun 22 '10 at 14:29
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