FHIRPath Function: startsWith

Returns true when the input string starts with the given prefix.

If prefix is the empty string (''), the result is true.

If the input collection is empty, the result is empty.

If the input collection contains multiple items, the evaluation of the expression will end and signal an error to the calling environment.

'abcdefg'.startsWith('abc') // true
'abcdefg'.startsWith('xyz') // false

Summary

• Category: String Manipulation
• Section: 5.6.4
• Return Type: Boolean
• Empty Input Result: empty
• Errors on Multiple Input: true

Description

Returns true when the input string starts with the given prefix.

Arguments

• prefix: String - Prefix to check

Type Mapping

• String-Boolean

Example

'abcdefg'.startsWith('abc') // true
'abcdefg'.startsWith('xyz') // false