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  2. pandas (software) - Wikipedia

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

    Subsets of data can be selected by column name, index, or Boolean expressions. For example, df[df['col1'] > 5] will return all rows in the DataFrame df for which the value of the column col1 exceeds 5. [4]: 126–128 Data can be grouped together by a column value, as in df['col1'].groupby(df['col2']), or by a function which is applied to the index.

  3. Row- and column-major order - Wikipedia

    en.wikipedia.org/wiki/Row-_and_column-major_order

    To use column-major order in a row-major environment, or vice versa, for whatever reason, one workaround is to assign non-conventional roles to the indexes (using the first index for the column and the second index for the row), and another is to bypass language syntax by explicitly computing positions in a one-dimensional array.

  4. Table (database) - Wikipedia

    en.wikipedia.org/wiki/Table_(database)

    In a database, a table is a collection of related data organized in table format; consisting of columns and rows.. In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. [1]

  5. 9 Questions Retirees Need To Ask Heading In to 2025 - AOL

    www.aol.com/9-questions-retirees-ask-heading...

    Get sweaters on sale for the whole family during Nordstrom's Half-Yearly Sale: Up to 60% off must-have brands. AOL. The best laundry detergent sheets of 2025. AOL.

  6. Database index - Wikipedia

    en.wikipedia.org/wiki/Database_index

    In the phone book example with a composite index created on the columns (city, last_name, first_name), if we search by giving exact values for all the three fields, search time is minimal—but if we provide the values for city and first_name only, the search uses only the city field to retrieve all matched

  7. North Carolina police officer shot dead after responding to ...

    www.aol.com/north-carolina-police-officer-shot...

    Greensboro police officer Michael Horan succumbed to his injuries after he was shot at a Food Lion store at around 11 a.m., Assistant Chief MJ Harris said during a news conference.

  8. Index notation - Wikipedia

    en.wikipedia.org/wiki/Index_notation

    The second method is used when the number of elements in each row is the same and known at the time the program is written. The programmer declares the array to have, say, three columns by writing e.g. elementtype tablename[][3];. One then refers to a particular element of the array by writing tablename[first index][second index]. The compiler ...

  9. Husband, wife die in separate accidents after Christmas ...

    www.aol.com/news/husband-wife-die-separate...

    A Michigan couple died in two separate accidents between Christmas and New Year's Day, according to local officials.. Scott Levitan, 66, and Mary Lou Levitan, also 66, were both residents of ...