servy | A tiny little web server | HTTP library
kandi X-RAY | servy Summary
kandi X-RAY | servy Summary
Well it's a tiny little web server written in rust. It's a single binary with only a few flags meant to be analogous to python -m http.server.
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QUESTION
I have two instances of a class which creates a UDP socket to receive data from UDP clients. If one of the instances throws an exception I want to handle it immediately in a higher layer. In my program they're started with await Task.WhenAll(recv1.StartAsync(), recv2.StartAsync)
. This however waits for all tasks to finish before the first exception is thrown. Any ideas on how to resolve this problem?
ANSWER
Answered 2020-Sep-24 at 19:53There's probably a way to do it but I can't think of one without making your code very messy. It'd be better to handle the exception in the actual task. If you need to handle it with common code, use a handler delegate.
QUESTION
Is it possible to conditionally choose a value on the left hand side of an assignment statement (in C#)?
If I was assigning one of two values to a single variable, I could do this:
...ANSWER
Answered 2017-Dec-04 at 15:22 var var1 = "";
var var2 = "";
var mode = "A";
var pointlessVar = "";
pointlessVar = mode == "A" ? var1 = "blah" : var2 = "de blah";
QUESTION
I need to run three async I/O operations in parallel, particularly they are the database calls. So, I write the following code:
...ANSWER
Answered 2019-Jul-29 at 12:55I agree with @MickyD, the tasks have been created on the initial call. The two calls are similar in effect.
A few nuances though. When you call GetThingOneAsync method, it executes up until the point where it reaches an await statement; that is when it returns the Task. If the Async method never does an await then it exits and returns an already-completed Task. So if these were compute-intensive routines (doesn't look like it) then you would not be achieving any parallelism. You would need to use Task.Run to achieve simultaneous execution. Another point is that if you use await from the UI thread then all of the execution will be on the UI thread -- just scheduled at different times. This is somewhat OK if the Task is doing IO because it will block for the read/write. However it can start to add up so if you are going to do anything substantial then you should put it on the thread pool (I.e. with Task.Run).
As for the comment from your colleagues, as I said, the task1,2,3 do start running before the awaits. But when you hit the await, the method that you are currently executing will suspend and return a Task. So it is somewhat correct that it is the await that creates the Task -- just that the task you are thinking about in your question (task1,2,3) is the one created when GetThingXxxAsync hits an await, not the one created when your main routine awaits task1,2,3.
QUESTION
I'm filtering a list using Enum.filter/2
.
I've simplified the code to it's bare essentials to isolate what's happening, but I can't understand where it's going wrong.
Here's the code:
...ANSWER
Answered 2019-Aug-16 at 15:32bear_filter -> true
On line 10, you're pattern matching bear_filter
to the parameter bear
and then not using it in the resulting expression (true
does not contain bear_filter
).
The _
is unreachable because case
is used to perform pattern matching. In this case, bear_filter
will pattern match any value passed in, causing the bear_filter -> true
to always match and execute.
QUESTION
I'm not just trying to find the maximum value in a list. I'm trying to find each Object that has a maximum value for a given string title. The end result will be a list object with only the objects that have maximum value.
I cannot seem to get my LINQ statement to work. It keeps pulling the maximum integer value rather than pull the object that has the maximum integer value.
Also, if there is a more efficient route rather than looping through the list - I'm all for it.
Any help is greatly appreciated
EDIT This is not a duplicate of this link suggested by Servy
if @Servy would focus on reading the text instead of comparing titles he/she would see that this is completely different. That link wanted to find a single max value of an object. This is not what I'm asking.
Here's my current code:
...ANSWER
Answered 2018-Aug-07 at 16:11You can achieve the desired result at once with a simple GroupBy
and subsequent ordering within each group:
QUESTION
I'm trying to try to match a host address to a service path, as an example, let's think i have an nginx pod servying to sites: site1 and site2. Let's think about a service called my-nginx-service which services my two sites as paths:
- my-nginx-service (178.123.55.37:80)
- /site1
- /site2
There exists a way to map it to something like:
- host: site-one.mydomain.com
http:
paths:
- backend:
serviceName: nginx-service
servicePort: 80
servicePath: /site2
- host: site-two.mydomain.com
http:
paths:
- backend:
serviceName: nginx-service
servicePort: 80
servicePath: /site2
? I have not found anything about it in docs. Or maybe I've not understood well them.
Thank you very much for your time!
...ANSWER
Answered 2018-Mar-15 at 20:08You can see from the output below of kubectl explain
that the servicePath
field above does not exist (at least on version 1.9.3).
kubectl explain ingress.spec.rules.http.paths.backend
:
QUESTION
I'm waffling between which is better (in terms of aesthetics, idiomatic-ness, and performance):
...ANSWER
Answered 2018-Mar-26 at 13:40Consider using await instead of ContinueWith. the result of await equals Task.Result. The Disposing of aes can be done using a using statement:
QUESTION
Im trying to compile a linq expression to a console application as .exe file.
Following code works fine and pauses:
...ANSWER
Answered 2018-Jan-05 at 19:01It's easy enough to see what's going on when you write the actual code that is analogous to each expression.
For the first one:
QUESTION
I need to have a list where all items extend class A and implement interface I. Additionally class A might be multiple parents up in the hierarchy.
If all the classes were direct descendants of class A I could just use an Abstract class that implements I as the generic and use that, but my use case doesn't allow for this.
is there a way to tell a List that its elements must both extend class A and implement interface I ? List
? If not is there another way around this?
Example Code:
...ANSWER
Answered 2017-Aug-21 at 19:48When you specify generic constraints you can specify as many as you want, and all of them must be met, so you can simply add a generic constraint of A
and I
to your type, and a type has to meet both of those constraints to be a valid generic argument.
QUESTION
Given the following example:
...ANSWER
Answered 2017-Jun-13 at 22:49//this gets allocated
var foo = 42;
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Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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