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How to find and return a duplicate value in array
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a = ["A", "B", "C", "B", "A"]
a.detect{ |e| a.count(e) > 1 }
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(arr...
Benefits of prototypal inheritance over classical?
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I know that this answer is 3 years late but I really think the current answers do not provide enough information about how prototypal inheritance is better than classical inheritance.
First let's see the most common arguments J...
Why does Java's Arrays.sort method use two different sorting algorithms for different types?
...g to Java 7 API docs cited in this answer, Arrays#Sort() for object arrays now uses TimSort, which is a hybrid of MergeSort and InsertionSort. On the other hand, Arrays#sort() for primitive arrays now uses Dual-Pivot QuickSort. These changes were implemented starting in Java SE 7.
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How can I set the max-width of a table cell using percentages?
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Actually max-width works in Safari and Chrome now. I am not sure how long it has been supported for.
– Jay
Aug 30 '19 at 6:36
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How to find list of possible words from a letter matrix [Boggle Solver]
... I have been playing a game on my iPhone called Scramble. Some of you may know this game as Boggle. Essentially, when the game starts you get a matrix of letters like so:
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Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la
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Simple and clear. I don't know about other answers but your answer works like magnet to my confusion and my concept is clear now.
– Stack Overflow
Jun 21 '19 at 17:18
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SSO with CAS or OAuth?
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Moreover, as said in Bertl reply CAS now provides OAuth both as client or server.
– Anthony O.
Jan 31 '14 at 10:26
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No secret option provided to Rack::Session::Cookie warning?
...fferent way than intended. It should be ok to just ignore this warning for now until there is a final agreement on how to handle this issue and a fix in place.
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How to echo with different colors in the Windows command line
I know that the color bf command sets the colors of the whole command line window but I wanted to to print one single line in a different color.
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Too many 'if' statements?
...ne 1-digit base 4 number {0,1,2,3} -- 4 different values, also important.
Now, a 1-digit base 4 number can be expressed as a 2-digit base 2 number; {0,1,2,3} = {00,01,10,11}, and so each output can be encoded with only 2 bits. From above, there are only 16 different outputs possible, so 16*2 = 32...