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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.
Thus, any user-defined class can support standard iteration by composing these roles and implementing the iterator and/or pull-one methods. The DNA class represents a DNA strand and implements the iterator by composing the Iterable role. The DNA strand is split into a group of trinucleotides when iterated over:
A counterpart of a UD Chain is a definition-use chain (or DU chain), which consists of a definition D of a variable and all the uses U reachable from that definition without any other intervening definitions. [3] Both UD and DU chains are created by using a form of static code analysis known as data flow analysis.
A reference to a location in a directory system is called a path. In many operating systems, programs have an associated working directory in which they execute. Typically, file names accessed by the program are assumed to reside within this directory if the file names are not specified with an explicit directory name.
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scikit-learn (formerly scikits.learn and also known as sklearn) is a free and open-source machine learning library for the Python programming language. [3] It features various classification, regression and clustering algorithms including support-vector machines, random forests, gradient boosting, k-means and DBSCAN, and is designed to interoperate with the Python numerical and scientific ...
Applications that still support the DIF format are Collabora Online, Excel, [note 1] Gnumeric, and LibreOffice Calc. Historical applications that used to support it until they became end of life or no longer acknowledge support of the format are dBase , FileMaker , Framework , Lotus 1-2-3 , Multiplan , OpenOffice.org Calc and StarCalc .
An alternative algorithm for topological sorting is based on depth-first search.The algorithm loops through each node of the graph, in an arbitrary order, initiating a depth-first search that terminates when it hits any node that has already been visited since the beginning of the topological sort or the node has no outgoing edges (i.e., a leaf node):