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...Token, cx: &mut Context) -> Poll<io::Result<()>> {
let mut guard = self.statuses.lock().unwrap();
match guard.entry(token) {
Entry::Vacant(vacant) => {
vacant.insert(Status::Awaited(cx.waker().clone()));
Poll::Pending
}
Entry::Occupied(mut occupied) => {
match occupied.get() {
Status::Awaited(waker) => {
// skip clone is wakers are the same
if !waker.will...
...So I
randomly commented out code sections and found that the part where we find the
replaced sequence length and count matches in parallel (using rayon to join the
threads) caused the error.
However, somewhat surprisingly, removing the threads and running the code on
the main thread did not solve...
...Building HTTP client");
// will match https://...?page=XXX
let page_regex =
Regex::new(".*page=([0-9]*).*").expect("spiders/github: Compiling page regex");
GitHubSpider {
http_client,
page_regex,
expected_number_of_results: 100,
}
}
}
Extracting the item is just a matter of parsing the JSON, which is easy thanks to reqwest, which...
...usize },}
The update function needs a match clause to respond to our new message by updating the model:
fn update(&mut self, msg: Self::Message) -> UpdateAction<Self> { match msg { ... Message::Filter{filter} =>{ self.filter = filter; UpdateAction::Render } }}
And, finally, we need to attach a callback to our subcomponent to find...
...RefCell::new(None) }
}
fn area(&self) -> f64 {
let mut cache = self.cached_area.borrow_mut();
match *cache {
Some(area) => {
println!("Returning cached area: {}", area);
area
}
None => {
println!("Computing area...");
let area = self.width * self.height;
// Only for debugging purposes to track how many times the area is actually computed.
COMPUTE...
...Note that compare_and_swap atomically changes the value of an AtomicPtr
from an old value to a new value, if the old value matched. Also, for this post
you can safely ignore the Acquire, Release and Relaxed labels if you’re
not familiar with them.
impl<T> Stack<T...
...Here you can see a closure in Rust and the extremely versatile match block and Option enum which reminds me of Scala code.
|texture: &Option<(Vec<u8>, usize, usize, String)>| {
match texture {
Some(tuple) => tuple.3.clone(),
None => "".to_string(),
}
}
In fact writing Rust code reminds me most of writing...
...Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
// Ignoring pin projection here
loop {
match self {
Unresumed { input } => {
let blah = input > 10; // Preamble
*self = BarFut::Inlined { foo: foo(blah) };
},
Inlined { foo } => {
break foo
.poll(cx)
.map(|result| result * 2) // Postamble
},
}
}
}
}
That's a lot better than what's currently generated...
...It can be a wrapper of Cargo or use cargo-the-library.Matching the result of dependency resolutionIn an ideal world, a published crate on crates.io is guaranteed to be buildable. Other developers can fetch its source and build it flawlessly. This guarantee is upheld with the Cargo ad...
...Option<HitRecord> = None;
let mut closest_so_far = t_max;
for object in &self.objects {
match object.hit(ray, t_min, closest_so_far) {
Some(rec) => {
closest_so_far = rec.t;
temp_rec.replace(rec);
}
None => {}
}
}
temp_rec
}
}
Notice how the bool variable is gone and the code seems to...
...Option<HitRecord> = None;
let mut closest_so_far = t_max;
for object in &self.objects {
match object.hit(ray, t_min, closest_so_far) {
Some(rec) => {
closest_so_far = rec.t;
temp_rec.replace(rec);
}
None => {}
}
}
temp_rec
}
}
Notice how the bool variable is gone and the code seems to...
...Not really knowing what exactly we were going to make, I started making the things we thought would match any theme. The first thing I did was limited view and generating objects only outside of it. Next, I made it so players could move towards the tile they clicked on...
...To preserve the previous behavior, make sure to specify the matching options:
- let output = tensor.grid_sample_2d(grid, InterpolateMode::Bilinear);
+ let options = GridSampleOptions::new(InterpolateMode::Bilinear)
+ .with_padding_mode(GridSamplePaddingMode::Border)
+ .with_align_corners(true);
+ let output = tensor.grid_sample_2d(grid, options); QuantStore
The QuantStore variants used in...
...The contract checks to ensure that the obfuscated version of this matches what the user last sent in during the commit phase. The user's vote only counts towards the final tally if there is a match. Note that users can perform this action once.
Anyone can query the contract...
...let waker = this.waker_for_slot(index, cx.waker());
let mut slot_context = Context::from_waker(&waker);
let future_slot = match this.futures.get_mut(index) {
Some(slot) => slot,
None => continue
};
if let Some(future) = future_slot.as_mut() {
// Try to poll this future.
match future.as_mut().poll(&mut...
...In the mean time, use offset_of! and the static_assertions crate to test that your layouts match your expectations.
repr(C) layouts are not always SemVer stable
The limitations of repr(C) are not only technical, but also social. The central social contract of Rust’s crate authors is...
...want to match 3 words of 2 digit numbers followed by a capital letter? great, they can do that. want to match balanced parenthesized expressions? sadly, regex is incapable of ever solving that, because that language is not regular, so no matter how hard you try it will never solve...
...For
example
cargo-check-external-types first attempts to deserialize just the format
version, and bails if that doesn’t match. This means the user receives an
error about the version of nightly being wrong, which is much more useful and
actionable than an error about a missing or unknown...
...gl::Program<U, V, F> = gl.create_program(
vertex_shader,
fragment_shader,
)?;
program
.with_uniforms(/* uniform bindings matching U */)
.with_framebuffer(/* framebuffer matching F */)
.with_settings(/* draw settings */)
.draw(/* vertex specification matching V */)?;
Shader functions are written as normal Rust code that interacts with types from posh::sl, thereby leveraging...
...If the pattern does not match (this requires it to be refutable), the else block is executed. The else block must always diverge (evaluate to the never type).
let (mut v, w) = (vec![1, 2, 3], 42); // The bindings may be mut or const
let Some(t) = v.pop() else...
"`unsafe` Rust is all about flirting with UB but never giving in."