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Why does i = i + i give me 0?
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The issue is due to integer overflow.
In 32-bit twos-complement arithmetic:
i does indeed start out having power-of-two values, but then overflow behaviors start once you get to 230:
230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since it's essentially ari...
What Automatic Resource Management alternatives exist for Scala?
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For now Scala 2.13 has finally supported: try with resources by using Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readL...
Best way to do Version Control for MS Excel
What version control systems have you used with MS Excel (2003/2007)? What would you recommend and Why? What limitations have you found with your top rated version control system?
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Ruby max integer
...w big they can be.
If you are looking for the machine's size, i.e. 64- or 32-bit, I found this trick at ruby-forum.com:
machine_bytes = ['foo'].pack('p').size
machine_bits = machine_bytes * 8
machine_max_signed = 2**(machine_bits-1) - 1
machine_max_unsigned = 2**machine_bits - 1
If you are loo...
Determine if running on a rooted device
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return checkRootMethod1() || checkRootMethod2() || checkRootMethod3();
}
private static boolean checkRootMethod1() {
String buildTags = android.os.Build.TAGS;
return buildTags != null && buildTags.contains("test-keys");
}
private static boolean chec...
What are best practices for validating email addresses on iOS 2.0
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13 Answers
13
Active
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How to split a string in Java
I have a string, "004-034556" , that I want to split into two strings:
35 Answers
35
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How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to
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239
The -Wno-unused-variable switch usually does the trick. However, that is a very useful warning ...
How do I make the whole area of a list item in my navigation bar, clickable as a link?
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edited Jul 9 '10 at 2:36
Aaron Harun
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answere...
Error “library not found for” after putting application in AdMob
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rauroraraurora
3,50511 gold badge1818 silver badges2929 bronze badges
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