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Accept IntoIterators for transfer_multiple #7

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merged 1 commit into from
Oct 25, 2016
Merged

Accept IntoIterators for transfer_multiple #7

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4 changes: 3 additions & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,9 @@ impl Spidev {
/// Chaining together multiple requests like this can reduce latency
/// and be used for conveniently and efficient implementing some
/// protocols without extra round trips back to userspace.
pub fn transfer_multiple(&self, transfers: &Vec<SpidevTransfer>) -> io::Result<()> {
pub fn transfer_multiple<'a, I>(&self, transfers: I) -> io::Result<()>
where I: IntoIterator<Item = &'a SpidevTransfer>
{
spidevioctl::transfer_multiple(self.devfile.as_raw_fd(), transfers)
}
}
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6 changes: 4 additions & 2 deletions src/spidevioctl.rs
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Expand Up @@ -240,9 +240,11 @@ pub fn transfer(fd: RawFd, transfer: &mut SpidevTransfer) -> io::Result<()> {
Ok(())
}

pub fn transfer_multiple(fd: RawFd, transfers: &Vec<SpidevTransfer>) -> io::Result<()> {
pub fn transfer_multiple<'a, I>(fd: RawFd, transfers: I) -> io::Result<()>
where I: IntoIterator<Item = &'a SpidevTransfer>
{
// create a boxed slice containing several spi_ioc_transfers
let mut raw_transfers = transfers.iter()
let mut raw_transfers = transfers.into_iter()
.map(|transfer| transfer.as_spi_ioc_transfer())
.collect::<Vec<_>>()
.into_boxed_slice();
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