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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    In Python, non-innermost-local and not-declared-global accessible names are all aliases. Among dynamically-typed languages, Python is moderately type-checked. Implicit conversion is defined for numeric types (as well as booleans), so one may validly multiply a complex number by an integer (for instance) without explicit casting.

  3. Class variable - Wikipedia

    en.wikipedia.org/wiki/Class_variable

    In the above Python code, it does not provide much information as there is only class variable in the Dog class that provide the vertebrate group of dog as mammals. In instance variable, you could customize your own object (in this case, dog_1) by having one or more instance variables in the Dog class.

  4. Foreach loop - Wikipedia

    en.wikipedia.org/wiki/Foreach_loop

    In Raku, a sister language to Perl, for must be used to traverse elements of a list (foreach is not allowed). The expression which denotes the collection to loop over is evaluated in list-context, but not flattened by default, and each item of the resulting list is, in turn, aliased to the loop variable(s). List literal example:

  5. Comparison of programming languages (basic instructions ...

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

    a type_character and As clause do not both appear; if an As clause is present, an array_rank_specifier does not appear both as a modification of the identifier and on the type of the As clause; an unmodified_type can be determined, by the rule that, if a type_character or As clause is present, unmodified_type is that specified by such construct,

  6. pandas (software) - Wikipedia

    en.wikipedia.org/wiki/Pandas_(software)

    Pandas' syntax for mapping index values to relevant data is the same syntax Python uses to map dictionary keys to values. For example, if s is a Series, s['a'] will return the data point at index a. Unlike dictionary keys, index values are not guaranteed to be unique.

  7. Project COUNTER - Wikipedia

    en.wikipedia.org/wiki/Project_COUNTER

    Project COUNTER or simply COUNTER (Counting Online Usage of Networked Electronic Resources) is an international non-profit membership organization of libraries, publishers, and vendors. The organization continually develops a standard, the Code of Practice , designed to count the usage of library electronic resources : journals, databases ...

  8. Uninitialized variable - Wikipedia

    en.wikipedia.org/wiki/Uninitialized_variable

    In C, variables with static storage duration that are not initialized explicitly are initialized to zero (or null, for pointers). [ 3 ] Not only are uninitialized variables a frequent cause of bugs, but this kind of bug is particularly serious because it may not be reproducible: for instance, a variable may remain uninitialized only in some ...

  9. Program counter - Wikipedia

    en.wikipedia.org/wiki/Program_counter

    The program counter (PC), [1] commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR), [2] [1] the instruction counter, [3] or just part of the instruction sequencer, [4] is a processor register that indicates where a computer is in its program sequence.