List Frequency Counter
Count occurrences of strings in a list.
Description
Count occurrences of strings in a list.
List Frequency Counter: Count occurrences of strings in a list.
When to use List Frequency Counter
Use this list operation for a deterministic sequence transformation or summary when item equality, numeric ordering, and mutation expectations are explicit.
- Values
- Required list input.
How List Frequency Counter works
Count occurrences of strings in a list. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Frequencies
- The resulting frequencies returned as an object.
Limitations and assumptions
- Results depend on stable ordering, comparison rules, duplicate and missing-value treatment, rotation convention, numeric parsing, and whether nested values are copied or referenced.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Test empty, singleton, duplicate, negative, and heterogeneous inputs, and retain the source list when reversibility matters.
References
-
List (abstract data type) — Wikipedia contributors
Similar or alternative tools
- List Unique Values Tool
Remove duplicate strings while preserving first occurrence order.
- Cartesian Product
Build every ordered pair picking one element from each of two lists.
- List Chunk Tool
Split a string list into consecutive chunks of a requested size.