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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...ometimes still winds up being the effective maximum if you want to use UTF-8 and have the column indexed (because of index length limitations).
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Why does Math.round(0.49999999999999994) return 1?
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1. http://docs.oracle.com/javase/6/docs/api/java/lang/Math.html#round%28double%29
2. http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6430675 (credits to @SimonNickerson for finding this)
3. http://docs.oracle.com/javase/7/docs/api/java/lang/Math.html#round%28double%29
4. http://grep...
SQL query for finding records where count > 1
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edited Aug 22 '11 at 18:52
answered Aug 22 '11 at 17:51
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Why do indexes in XPath start with 1 and not 0?
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8
To answer this question, we must examine the history of some technologies.
RSS XML XSLT and XP...
One-line list comprehension: if-else variants
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edited Jan 18 '14 at 13:01
Tim Pietzcker
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Ways to iterate over a list in Java
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Olivier
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answered Aug 23 '13 at 19:29
Ted HoppTed Hopp
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Proper usage of Optional.ifPresent()
...rying to understand the ifPresent() method of the Optional API in Java 8.
5 Answers
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C# equivalent to Java's charAt()?
...he character at that index.
Example:
In Java, you would say
str.charAt(8);
In C#, you would say
str[8];
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