Description
Return caption length and supplied-bound gaps.
Labels, grid coordinates and color-wheel exercises use chosen text-counting and angle conventions. Character counts do not measure visual width, and cyclic indexing does not select a color model. Supplied glyph-width and layout assumptions are estimates rather than a rendered typography check.
Return caption length and supplied-bound gaps.
When to use this tool
Use Student Art Caption Length Gap when checking the stated classroom label or cyclic-angle convention.
How to use the tool and how it works
- Enter caption, suppliedMinimum, suppliedMaximum, countCodePoints. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read length, belowMinimum, aboveMaximum. Use the output convention below.
Return caption length and supplied-bound gaps. Require whole 0 <= minimum <= maximum; choose Unicode code-point or UTF-16 length, belowMinimum/aboveMaximum are nonnegative shortfall/excess counts.1
Unicode code points and UTF-16 code units are different counting units. Neither alone measures user-perceived grapheme clusters or rendered text width.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| caption | Caption | Required. Text; maximum UTF-16 length 8192. |
| suppliedMinimum | Supplied Minimum | Required. Safe integer; minimum 0. |
| suppliedMaximum | Supplied Maximum | Required. Safe integer. |
| countCodePoints | True counts Unicode code points; false counts UTF-16 code units. Neither counts grapheme clusters. | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| length | Length | Required. Safe integer. |
| belowMinimum | Nonnegative count shortfall max(0,suppliedMinimum-length), rather than a Boolean. | Required. Safe integer. |
| aboveMaximum | Nonnegative count excess max(0,length-suppliedMaximum), rather than a Boolean. | Required. Safe integer. |
{
"input": {
"caption": "A😀",
"suppliedMinimum": 3,
"suppliedMaximum": 5,
"countCodePoints": true
},
"output": {
"length": 2,
"belowMinimum": 1,
"aboveMaximum": 0
}
}Limitations and assumptions
- Neither unit equals grapheme or visual width in general; no readability, language quality or appropriate caption limit is determined.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Inspect rendered labels and actual layout, and use a complete appropriate color or geometry model when visual appearance matters.
References
-
Calculation and input contract: art-education/student-art-caption-length-gap — tool.io
-
Unicode 17.0: core specification, encoding forms — Unicode Consortium
Similar or alternative tools
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