Description
Return literal membership and its zero-based index, or index -1 when absent.
Source-scoped cultural and historical records preserve an edition, naming convention, or local identifier. Literal agreement is useful bookkeeping but does not establish interpretation, authenticity, or authority.
Return literal membership and its zero-based index, or index -1 when absent.
When to use this tool
Use Historical Unit Symbol Token when you need a precise source-token or range consistency check.
How to use the tool and how it works
- Enter symbol, suppliedSymbols, suppliedNamespace. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read namespace, recognized, index. Inspect recognized before interpreting the associated values.
Require nonempty suppliedNamespace and distinct suppliedSymbols. Return literal membership and its zero-based index, or index -1 when absent.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| symbol | Symbol | Required. Text; maximum UTF-16 length 8192. |
| suppliedSymbols | Supplied Symbols | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| suppliedNamespace | Supplied Namespace | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| namespace | Namespace | Required. Text; maximum UTF-16 length 8192. |
| recognized | Whether the token matches the supplied vocabulary or supported mapping. | Required. Boolean. |
| index | Zero-based position under the stated lookup convention, including any -1 sentinel. | Required. Safe integer. |
{
"input": {
"symbol": "ell",
"suppliedSymbols": [
"ell",
"yard"
],
"suppliedNamespace": "archive-A"
},
"output": {
"namespace": "archive-A",
"recognized": true,
"index": 0
}
}Limitations and assumptions
- Symbols and namespace are supplied rather than an authoritative historical-unit registry; recognition does not establish a conversion factor or quantity meaning.
- 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
Consult the source edition and relevant community or scholarly guidance before interpreting or reusing the material.
References
Similar or alternative tools
- Authorized Term Namespace Token
Require nonempty namespace, delimiter, and term and concatenate them in that order as qualifiedTerm.
- Historical Price Unit Reference Flag
Compare them literally and set comparable when they match or conversionKnown is true.