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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python supports a wide variety of string operations. Strings in Python are immutable, so a string operation such as a substitution of characters, that in other programming languages might alter the string in place, returns a new string in Python. Performance considerations sometimes push for using special techniques in programs that modify ...

  3. International Science and Engineering Fair - Wikipedia

    en.wikipedia.org/wiki/International_Science_and...

    The Regeneron International Science and Engineering Fair (ISEF) is an annual science fair in the United States. [1] It is owned and administered by the Society for Science, [2] a 501(c)(3) non-profit organization based in Washington, D.C. [3] Each May, more than 1800 students from roughly 75 countries and territories compete in the fair for scholarships, tuition grants, internships, scientific ...

  4. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    In Python, == compares by value. Python's is operator may be used to compare object identities (comparison by reference), and comparisons may be chained—for example, a <= b <= c. Python uses and, or, and not as Boolean operators. Python has a type of expression named a list comprehension, and a more general expression named a generator ...

  5. Subcategory - Wikipedia

    en.wikipedia.org/wiki/Subcategory

    Let C be a category. A subcategory S of C is given by . a subcollection of objects of C, denoted ob(S),; a subcollection of morphisms of C, denoted hom(S).; such that for every X in ob(S), the identity morphism id X is in hom(S),

  6. String-searching algorithm - Wikipedia

    en.wikipedia.org/wiki/String-searching_algorithm

    A string-searching algorithm, sometimes called string-matching algorithm, is an algorithm that searches a body of text for portions that match by pattern. A basic example of string searching is when the pattern and the searched text are arrays of elements of an alphabet ( finite set ) Σ.

  7. Comparison of programming languages (string functions ...

    en.wikipedia.org/wiki/Comparison_of_programming...

    String functions are used in computer programming languages to manipulate a string or query information about a string (some do both).. Most programming languages that have a string datatype will have some string functions although there may be other low-level ways within each language to handle strings directly.

  8. List comprehension - Wikipedia

    en.wikipedia.org/wiki/List_comprehension

    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.

  9. List of programming languages by type - Wikipedia

    en.wikipedia.org/wiki/List_of_programming...

    Assembly languages directly correspond to a machine language (see below), so machine code instructions appear in a form understandable by humans, although there may not be a one-to-one mapping between an individual statement and an individual instruction.

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