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Explicitly calling return in a function or not
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It depends on strategy and programming style of the programmer what style he use, he can use no return() as it is not required.
R core programmers uses both approaches ie. with and without explicit return() as it is possible to find in sources of 'base' functions.
Many times only retur...
How to see if an object is an array without using reflection?
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@edbras: yes, that's what Steve Kuo was saying down below. My solution uses pure linguistic construct instead of API call.
– polygenelubricants
Apr 28 '10 at 8:38
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How many spaces will Java String.trim() remove?
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I had to down-vote as this answer does not cover what the documentation means by "whitespace". It would seem logical that it would be where Chararacter.isWhitespace is true, but that is not what it means by "whitespace" ..
– user2864740
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Batch file to delete files older than N days
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Enjoy:
forfiles -p "C:\what\ever" -s -m *.* -d <number of days> -c "cmd /c del @path"
See forfiles documentation for more details.
For more goodies, refer to An A-Z Index of the Windows XP command line.
If you don't have forfiles install...
SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
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Alter a view is way better than drop and recreate it. What if you have a lot of existing users security setup for a view, then you would have to recreate all those. This is my approach to this issue.
– jonas
Dec 4 '13 at 11:42
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How can I merge properties of two JavaScript objects dynamically?
...hat this will simply add all attributes of obj2 to obj1 which might not be what you want if you still want to use the unmodified obj1.
If you're using a framework that craps all over your prototypes then you have to get fancier with checks like hasOwnProperty, but that code will work for 99% of cas...
How do I break out of a loop in Scala?
...<- 0 to 1000) sum += i
except you want to stop when (sum > 1000).
What to do? There are several options.
(1a) Use some construct that includes a conditional that you test.
var sum = 0
(0 to 1000).iterator.takeWhile(_ => sum < 1000).foreach(i => sum+=i)
(warning--this depends o...
HTTP URL Address Encoding in Java
...nswers above are INCORRECT.
The URLEncoder class, despite is name, is NOT what needs to be here. It's unfortunate that Sun named this class so annoyingly. URLEncoder is meant for passing data as parameters, not for encoding the URL itself.
In other words, "http://search.barnesandnoble.com/bookse...
Does Java support default parameter values?
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@JarrodRoberson: Nice, looking forward to it! What I wanted to communicate: as a reader of your blog, a 50 line example with a brief text description of what's going on would help me more than 300 lines without context.
– Christian Aichinger
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Generic TryParse
...his is marked as the answer and upvoted so much when it does not implement what was requested: a generic TryParse. The main purpose of TryParse methods is that they don't throw exceptions when attempting to perform the parsing and have a much lower impact on performance when the parsing fails and th...