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substring

jsonata_core::functions::string

Function substring 

Source 
pub fn substring(
    s: &str,
    start: i64,
    length: Option<i64>,
) -> Result<JValue, FunctionError>
Expand description

$substring(str, start, length) - Extract substring Extracts a substring from a string using Unicode character positions. Follows the JSONata spec (which mirrors JS Array.prototype.slice):

  • start: zero-based position; negative means count from end
  • length: optional max number of characters to extract