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Designing function f(f(n)) == -n
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The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
... was written 11 years ago, but now there are far better options to do this more cleanly in a single line, both using only Java built-in classes or using a utility library. See other answers below.
Since strings are immutable, you may want to use the StringBuilder class if you're going to alter th...
How to check if a String contains another String in a case insensitive manner in Java?
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is this approach using Pattern more performant than s1.toLowerCase().contains(s2.toLowerCase()) ?
– Rajat Gupta
Aug 9 '12 at 10:24
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How to pattern match using regular expression in Scala?
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Determine if a sequence contains all elements of another sequence using Linq [duplicate]
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+1 Any() is much more efficient than Count()
– JaredPar
Jan 2 '09 at 19:17
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Android: Difference between Parcelable and Serializable?
...arcelable is faster than Serializable interface
Parcelable interface takes more time to implement compared to Serializable interface
Serializable interface is easier to implement
Serializable interface creates a lot of temporary objects and causes quite a bit of garbage collection
Parcelable array ...
Is floating point math broken?
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I think "some error constant" is more correct than "The Epsilon" because there is no "The Epsilon" which could be used in all cases. Different epsilons need to be used in different situations. And the machine epsilon is almost never a good constant to use.
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What is the ultimate postal code and zip regex?
...y two cents: in Brazil it is actualy 8 numbers, 5 followed by a dash and 3 more
– Jorge Campos
Oct 16 '15 at 2:28
^\d{...
Why is there no tuple comprehension in Python?
...ference between using a comprehension and using a constructor+generator is more than subtle if you care about performance. Comprehensions result in faster construction compared to using a generator passed to a constructor. In the latter case you are creating and executing functions and functions are...
Difference between and text
... other browsers will only submit the value. Using <button> gives you more layout freedom over the design of the button. In all its intents and purposes, it seemed excellent at first, but various browser quirks make it hard to use at times.
In your example, IE6 will send text to the server, w...