StrInsertRangeFastL

Description

Fast (order-not-preserving) range insert at idx. L-form. The existing characters at and after idx are relocated to the new tail (order not preserved) before the new range occupies idx. Source range zeroed-on-take.

Success

Returns true; new range at idx; previous occupants relocated to the new tail (unordered).

Failure

Returns false on allocation failure. str and source unchanged.

Usage example (Cross-references)

    /// TAGS: Str, Insert, Range, Fast, Unordered
    ///
    #define StrInsertRangeFast(str, varr, idx, count) StrInsertRangeFastL((str), (varr), (idx), (count))
    
    ///