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How do you add swap to an EC2 instance?
...r extra memory, this memory is much slower than normal memory however much more of it is available.
To add this extra space to your instance you type:
sudo /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
sudo /sbin/mkswap /var/swap.1
sudo chmod 600 /var/swap.1
sudo /sbin/swapon /var/swap.1
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Implementing two interfaces in a class with same method. Which interface method is overridden?
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im a java developer but c# is really more clever on this : stackoverflow.com/questions/2371178/…
– Amir Ziarati
Aug 5 '17 at 11:24
add ...
Database sharding vs partitioning
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Partitioning is more a generic term for dividing data across tables or databases. Sharding is one specific type of partitioning, part of what is called horizontal partitioning.
Here you replicate the schema across (typically) multiple insta...
SQL WHERE.. IN clause multiple columns
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or more generally SELECT * FROM table INNER JOIN otherTable ON ( table.x = otherTable.a AND table.y = otherTable.b)
– ala
Jul 16 '09 at 7:56
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Tool to convert Python code to be PEP8 compliant
...dy Hayden gave good overview of autopep8. In addition to that there is one more package called pep8ify which also does the same thing.
However both packages can remove only lint errors but they cannot format code.
little = more[3: 5]
Above code remains same after pep8ifying also. But the code ...
Why can't static methods be abstract in Java?
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A more concise answer would be 'bad language design.' Static should mean 'belongs to the class' because that's how it's used intuitively as this very question demonstrates. See "classmethod" in Python.
– A...
What is the fastest integer division supporting division by zero no matter what the result is?
... turned out to be such a popular question and answer, I'll elaborate a bit more. The above example is based on programming idiom that a compiler recognizes. In the above case a boolean expression is used in integral arithmetic and the use of condition flags are invented in hardware for this purpose....
What's the best three-way merge tool? [closed]
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More advantages of KDiff3: same interface for Linux and Windows, very smart algorithm for solving conflicts, regular expressions for automatically solving conflicts, integrate with ClearCase, SVN and Git, editable merged file...