Identifies the index of the first minimum value in a numeric vector.

Identifies the index of the first maximum value in a numeric vector.

Checks if all elements of a logical vector are TRUE.

Checks if at least one element of a logical vector is TRUE.

Checks if values are finite (i.e., not infinite or NaN).

Checks if values are infinite.

Checks if values are NaN (Not a Number).

Checks if an object is NULL.

Checks if values are missing (NA).

Converts a date-time object to a POSIXct object, representing a date-time as the number of seconds since the specified origin.

Converts a character or numeric object to a Date object.

Converts an object to character type.

Converts an object to a numeric type.

Converts a vector to a factor.

Converts an object to a data frame.

Converts an object to a matrix.

Converts an object to a vector.

Reverses the effect of split by combining the elements of a list into a vector, matrix, or data frame.

Splits a vector, data frame, or list into groups based on a factor or list of factors.

Replicates the evaluation of an expression a specified number of times.