Function strbefore

strbefore(source: string, substring: string): string
Generates a SPARQL strbefore() call returning the portion before a substring.

Returns the portion of source preceding the first occurrence of substring, or the empty string when substring is absent.
Parameters
- source: string
  The expression evaluating to the source string
- substring: string
  The expression evaluating to the delimiting substring
Returns string
The strbefore() call

See
SPARQL 1.1 STRBEFORE
- Defined in builder.ts:1624