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[−][src]Function combine::parser::range::take_fn

pub fn take_fn<F, I>(searcher: F) -> TakeFn<F, I> where
    F: FnMut(I::Range) -> Option<usize>,
    I: FullRangeStream,
    I::Range: Range, 

Searches the entire range using searcher and then consumes a range of Some(n). If f can not find anything in the range it must return None which indicates an end of input error.

See take_until_bytes for a usecase.