bkmgit commented on pull request #12024:
URL: https://github.com/apache/arrow/pull/12024#issuecomment-1000097944
@pitrou @lidavidm Maybe the following is ok as a hierarchy? The aim is to
clarify the current ordering. The comparison functions can have a link from the
string section to the numeric section.
# Compute Functions
## 1. The Generic Compute API
### a. Functions and function registry
### b. Input shapes
### c. Invoking functions
## 2. Implicit casts
### a. Common numeric type
## 3. Supported Type Categories
## 4. Reduction functions
#### I. Aggregations
#### II. Grouped by aggregations ("group by")
## 5. Element-wise ("scalar") functions
### a. Mathematical functions
#### I. Arithmetic functions
#### II. Bit-wise functions
#### III. Comparison functions
#### IV. Logarithmic functions
#### V. Logical functions
#### VI. Rounding functions
#### VII. Trigonometric functions
### b. String functions
#### I. Comparison functions
#### II. String component extraction
#### III. String joining
#### IV. String padding
#### V. String predicates
#### VI. String slicing
#### VII. String splitting
#### VIII. String transforms
#### IX. String trimming
### c. Other functions
#### I. Conversions
#### II. Containment tests
#### III. Categorizations
#### IV. Selecting / multiplexing
#### V. Structural transforms
### e. Temporal functions
#### I. Temporal component extraction
#### II. Temporal difference
#### III. Timezone handling
## 4. Array-wise ("vector") functions
#### I. Associative transforms
#### II. Selections
#### III. Sorts and partitions
#### IV. Structural transforms
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