List: List Half Open Slice Length Tool

Description

Require start and end independently within [0, length] and return max(0, end - start).

Half-open list ranges include their start and exclude their end. Empty and touching ranges can be disjoint even when their boundary coordinates coincide.

Require start and end independently within [0, length] and return max(0, end - start).

When to use this tool

Use List: List Half Open Slice Length when you need a precise range relationship for a list operation.

How to use the tool and how it works

Enter start, end, length. Use the units and conventions below.
Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
Read result. Expand result to inspect the returned fields.

Require start and end independently within [0, length] and return max(0, end - start).^[1]

Input field	Meaning and units	Accepted input
start	Start	Required. Safe integer.
end	End	Required. Safe integer.
length	Length, count, or code length under the stated domain and unit convention.	Required. Safe integer.

Output field	Interpretation	Returned shape
result	Result	Required. Object.
result.sliceLength	Slice Length	Calculated result member: number.

json

{
  "input": {
    "start": 2,
    "end": 5,
    "length": 8
  },
  "output": {
    "result": {
      "sliceLength": 3
    }
  }
}

Limitations and assumptions

Reversed endpoints yield zero instead of being swapped or rejected; endpoints are half open.
Outputs are nested inside result. 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

Validate ranges against the actual list length and the operation's overlap policy before mutating data.

References

Calculation and input contract: list/list-half-open-slice-length — tool.io

Similar or alternative tools

List Marker Delimited Span Endpoint
Advance start by one when includeStart is false and advance end by one when includeEnd is true.
List Circular Slice Length
Return the forward modular distance from start to end.