A user-defined function that aggregtates a value into an accumulator and returns the new result.
A user-defined callback function that can be applied to each value.
A user-defined comparer function that Compares to values and returns true (truthy) if they are equivalent or false (falsy) if not.
A user-defined function that joins two values and produces a result.
A user-defined predicate function, returns true or false based on input. A predicate function for testing a value against another.
A user-defined selector function with no index. Transforms a value into another kind of value.
A user-defined selector function. Transforms a value into another kind of value.
A selector function that can select a series from a dataframe.
User-defined zipper functions. Used to 'zip together' multiple series or dataframes.
Deserialize a dataframe from a JSON text string.
The JSON text to deserialize.
Returns a dataframe that has been deserialized from the JSON data.
Generate a data-frame containing a matrix of values.
The number of columns in the data-frame.
The number of rows in the data-frame.
The starting value.
The value to increment by for each new value.
Returns a dataframe that contains a matrix of generated values.
Generate a series from a range of numbers.
The value of the first number in the range.
The number of sequential values in the range.
Returns a series with a sequence of generated values. The series contains 'count' values beginning at 'start'.
Replicate a particular value N times to create a series.
The value to replicate.
The number of times to replicate the value.
Returns a new series that contains N copies of the value.
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