38 lines
840 B
Rust
38 lines
840 B
Rust
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// edition:2021
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type TranslateFn = Box<dyn Fn(String, String) -> String>;
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pub struct DeviceCluster {
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devices: Vec<Device>,
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}
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impl DeviceCluster {
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pub async fn do_something(&mut self) -> Result<String, Box<dyn std::error::Error>> {
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let mut last_error: Box<dyn std::error::Error>;
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for device in &mut self.devices {
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match device.do_something().await {
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Ok(info) => {
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return Ok(info);
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}
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Err(e) => {}
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}
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}
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Err(last_error)
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//~^ ERROR used binding `last_error` isn't initialized
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}
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}
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pub struct Device {
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translate_fn: Option<TranslateFn>,
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}
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impl Device {
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pub async fn do_something(&mut self) -> Result<String, Box<dyn std::error::Error>> {
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Ok(String::from(""))
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}
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}
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fn main() {}
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