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  2. pandas (software) - Wikipedia

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

    [4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.

  3. Fold (higher-order function) - Wikipedia

    en.wikipedia.org/wiki/Fold_(higher-order_function)

    Folds can be regarded as consistently replacing the structural components of a data structure with functions and values. Lists, for example, are built up in many functional languages from two primitives: any list is either an empty list, commonly called nil ([]), or is constructed by prefixing an element in front of another list, creating what is called a cons node ( Cons(X1,Cons(X2,Cons ...

  4. Concatenation - Wikipedia

    en.wikipedia.org/wiki/Concatenation

    In many programming languages, string concatenation is a binary infix operator, and in some it is written without an operator. This is implemented in different ways: Overloading the plus sign + Example from C#: "Hello, " + "World" has the value "Hello, World". Dedicated operator, such as . in PHP, & in Visual Basic [1] and || in SQL.

  5. Dataframe - Wikipedia

    en.wikipedia.org/wiki/Dataframe

    Dataframe may refer to: A tabular data structure common to many data processing libraries: pandas (software) § DataFrames; The Dataframe API in Apache Spark;

  6. Inside Snoopy Mania: Why the 74-Year-Old Beagle Is More ...

    www.aol.com/inside-snoopy-mania-why-74-181525876...

    Charles M. Schulz introduced Snoopy in the Peanuts comics in 1950, and he soon became a breakout star. Snoopy is seemingly more popular than ever, with Gen Z fans flocking to shares memes and buy ...

  7. Linked list - Wikipedia

    en.wikipedia.org/wiki/Linked_list

    For example, when scanning the list looking for a node with a given value x, setting the sentinel's data field to x makes it unnecessary to test for end-of-list inside the loop. Another example is the merging two sorted lists: if their sentinels have data fields set to +∞, the choice of the next output node does not need special handling for ...

  8. Florida man arrested for stabbing delivery driver faces ...

    www.aol.com/news/florida-man-arrested-stabbing...

    A Florida man was taken into custody on Monday after being accused of stabbing a delivery driver in Fort Lauderdale, Florida, earlier this month, according to police. Curtis Gardner, 33, is facing ...

  9. IHOP worker says she was fired for feeding a homeless man ...

    www.aol.com/news/ihop-worker-says-she-fired...

    A woman in the Sunshine State says she was let go from her job over an act of kindness. On Nov. 27, Florida resident Victoria Hughes appeared on NBC affiliate WFLA to discuss being fired from an ...