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Excerpt

Error handling snippets.

Usage

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Ignoring Errors
Code Block
languagecpp
 -Wl, -rpath,/opt/ros/ycs/mdb/lib -lmdb
Lising RPaths
Code Block
languagecpp
readelf -d <binary> | grep RPATH

Modifying

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rust
# Simple Example
let res: Result<u8, ()> = Ok(42);
let opt: Option<u8> = res.ok();
println!("{:?}", opt);

# Nested Example
MsgSender::new(name.to_string())
    .with_timepoint(sim_time(timestamp))
    .with_component(&[Box3D::new(length / 2.0, width / 2.0, height / 2.0)]).ok()
    .with_component(&[rerun_transform]).ok()
    .with_component(&[ColorRGBA::from_rgb(r, g, b)]).ok()
    .with_component(&[Radius(0.005)]).ok()
    .with_component(&[Label(name.to_string().to_owned())]).ok()
    .send(session).ok();
Collecting Errors
Code Block
languagerust
# Nested Example - Get the First Error

let v = vec![1];
let result = v.iter().map(| |
    MsgSender::new(name.to_string())
        .with_timepoint(sim_time(timestamp))
        .with_component(&[Box3D::new(length / 2.0, width / 2.0, height / 2.0)])?
        .with_component(&[rerun_transform])?
        .with_component(&[ColorRGBA::from_rgb(r, g, b)])?
        .with_component(&[Radius(0.005)])?
        .with_component(&[Label(name.to_string().to_owned())])?
    .send(session)?
).collect();
match result {
    Ok(_) => (),
    Err(e) => println!("WARN: Failed to send 'bounding box' to the viz session [{:?}]", e)
}