Description
Deduplicate elements in first-occurrence order, report whether element is present, and filter it out for result.
A set contains distinct values, so duplicate input items do not contribute additional members. Ordered output is a serialization convention; membership, equality, and the chosen universe determine the underlying set result.
Deduplicate elements in first-occurrence order, report whether element is present, and filter it out for result.
When to use this tool
Use Set Single Element Removal Flag when you need a deterministic operation on explicitly supplied sets or a finite membership representation.
How to use the tool and how it works
- Enter elements, element. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read changed, result. Inspect changed before interpreting the associated values.
Deduplicate elements in first-occurrence order, report whether element is present, and filter it out for result.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| elements | Elements | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| element | Element | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| changed | Whether the stated literal transformation changed its input. | Required. Boolean. |
| result | Result | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
{
"input": {
"elements": [
"a",
"b",
"a"
],
"element": "a"
},
"output": {
"changed": true,
"result": [
"b"
]
}
}Limitations and assumptions
- This uses exact element equality and removes every duplicate representation; no multiset count or source list is mutated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Specify the universe and equality convention before combining this result with other set operations.
References
Similar or alternative tools
- Set Single Element Insertion Flag
Deduplicate elements in first-occurrence order and append element only when absent.
- Finite Set Cardinality Update
Choose delta +1 or zero for insertion according to alreadyPresent, and -1 or zero for removal.