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Python uses the following syntax to express list comprehensions over finite lists: S = [ 2 * x for x in range ( 100 ) if x ** 2 > 3 ] A generator expression may be used in Python versions >= 2.4 which gives lazy evaluation over its input, and can be used with generators to iterate over 'infinite' input such as the count generator function which ...
Here, the list [0..] represents , x^2>3 represents the predicate, and 2*x represents the output expression.. List comprehensions give results in a defined order (unlike the members of sets); and list comprehensions may generate the members of a list in order, rather than produce the entirety of the list thus allowing, for example, the previous Haskell definition of the members of an infinite list.
In C++, any class that can be three-way compared can be a parameter to instances of std::compare_three_way, std::strong_order, std::weak_order, or std::partial_order. Since Java version 1.5, the same can be computed using the Math.signum static method if the difference can be known without computational problems such as arithmetic overflow ...
The boolean values True and False were added to the language in Python 2.2.1 as constants (subclassed from 1 and 0) and were changed to be full blown keywords in Python 3. The binary comparison operators such as == and > return either True or False. The boolean operators and and or use minimal evaluation. For example, y == 0 or x/y > 100 will ...
People with high blood pressure who slept for shorter durations were more likely to show poor cognitive function and increased levels of markers of brain aging and injury, a new study has found.
Class-based – object-oriented programming in which inheritance is achieved by defining classes of objects, versus the objects themselves; Prototype-based – object-oriented programming that avoids classes and implements inheritance via cloning of instances
At times, it seems the trouble that cats get into is entirely accidental. I can forgive my cat’s near-daily scattering of litter outside their box due to super-enthusiastic waste-burial techniques.
Even luxury gift ideas like this Kate Spade crossbody bag (was $279, now $59) is $5 cheaper than on Black Friday, and this Michael Kors jet-set crossbody bag (was $319, now $52) is $8 less than it ...