Conciseness | Leanote博客主题Conciseness,https : //leanote.com/member/blog/theme
kandi X-RAY | Conciseness Summary
kandi X-RAY | Conciseness Summary
Leanote博客主题Conciseness,https://leanote.com/member/blog/theme
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Conciseness
Conciseness Key Features
Conciseness Examples and Code Snippets
Community Discussions
Trending Discussions on Conciseness
QUESTION
While using parametrized JUnit tests in Eclipse, I'm running into a problem when I want to rerun a single test. The tests themselves run fine, and while I can rerun the first test from the context menu, rerunning the second test:
fails with the following message:
java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=test[1: A2 --> [Ljava.lang.String;@1e4a7dd4]], {ExactMatcher:fDisplayName=test[1: A2 --> Ljava.lang.String;@1e4a7dd4]] from org.junit.internal.requests.ClassRequest@6c3f5566
I'm pretty sure this is because JUnit doesn't 'like' my arrays; for some context: I'm using this to account for the fact that due to external circumstances, the code under test can produce one of two outcomes for a particular test case.
Here is some code to reproduce this:
...ANSWER
Answered 2022-Mar-20 at 15:57This seems to be a limitation of JUnit4 (at least you get the same error on the command line).
The simplest and straightforward solution would be to migrate from JUnit4 to JUnit5, which would also mean less code:
QUESTION
I am sending a post request with axios. However, when I check the browser console, I see that the request header is actually content-type: multipart/form-data
. How can I enforce application/x-www-form-urlencoded
? Or does it even matter?
ANSWER
Answered 2022-Mar-09 at 16:50FormData
objects always serialise to multipart/form-data
. They have to because they support file uploading and application/x-www-form-urlencoded
and application/json
do not.
If you want to send application/x-www-form-urlencoded
data you should pass a URLSearchParams
object instead.
This is described in the axios documentation.
In either case, you shouldn't specify the Content-Type
in the headers
since the underlying browser APIs will infer it correctly from the object type passed as the body data.
QUESTION
I run sample JHM benchmark which suppose to show dead code elimination. Code is rewritten for conciseness from jhm github sample.
...ANSWER
Answered 2022-Feb-09 at 17:17Those samples depend on JDK internals.
Looks like since JDK 9 and JDK-8152907, Math.log
is no longer intrinsified into C2 intermediate representation. Instead, a direct call to a quick LIBM-backed stub is made. This is usually faster for the code that actually uses the result. Notice how measureCorrect
is faster in JDK 17 output in your case.
But for JMH samples, it limits the the compiler optimizations around the Math.log
, and dead code / folding samples do not work properly. The fix it to make samples that do not rely on JDK internals without a good reason, and instead use a custom written payload.
This is being done in JMH here:
QUESTION
I'm experimenting with MobX state management solution in Flutter. I really like its conciseness and its simplicity but I'm a bit concerned in the drawbacks its way of mutating the state can introduce. Theoretically , we can force the state to be mutated only using actions and this is great because we can have a history of the changes using the spy feature the package provides. However, actions are automatically created by the framework if we do not use a specific one. For example, in the code below, I created a counter store class and I used it in the main function to assign a new value for the counter without using a predeclared action. The stric-mode has been previously set to "always".
...ANSWER
Answered 2021-Dec-30 at 11:25Hm, that looks weird for me too, because it does work differently in MobX JS (exactly like you describing), but it seems that Dart MobX changed behaviour for single field values and they are automatically wrapped in actions now, yes.
Maybe there should be a optional rule to turn strict checking on again, it would make sense. I suggest you to create and issue or discussion on Dart MobX Github.
More info there: https://github.com/mobxjs/mobx.dart/issues/206
QUESTION
I've created a Jest custom matcher. It works (meaning, it passes/fails when it should), but I don't see the message
anywhere in Jest's output.
What am I doing wrong? Do I have to do something to "enable" messages? Am I totally misunderstanding where the message is supposed to show up?
Environment: NestJS, Prisma
Execution command: jest --watch
Simplified code:
...ANSWER
Answered 2021-Dec-04 at 18:53As suggested by @jonsharpe, the reason was that Jest was showing the message from the "outer" matcher, .toHaveBeenCalledWith()
.
To fix this, I found the source that defines the .toHaveBeenCalledWith()
matcher and "merged" its code into my custom matcher.
This enabled my custom matcher to effectively "extend" the functionality of the .toHaveBeenCalledWith()
matcher, including my own custom code and messages.
In case it helps someone, the code I ended up with for my specific use case was:
QUESTION
I am not exactly sure how to phrase this question, sorry for the unhelpful title.
I have a large array (5 columns, 50 rows) that I am using to draw out a level environment in ascii text (each entry in the array is a single character and they are all printed out to make an image) i.e:
...ANSWER
Answered 2021-Nov-23 at 21:38Instead of trying to completely remap your array, you could instead wrap the array in a class.
Something like:
QUESTION
I want to prevent unencrypted uploads to an S3 bucket for all resources. I am attempting to do this using a S3 policy, as below:
...ANSWER
Answered 2021-Nov-12 at 19:36I believe that problem is that your S3 bucket policy indicates:
QUESTION
I am creating a Sound
class to play notes and would like feedback on the correctness and conciseness of my design. This class differs from the typical consumer/producer in two ways:
The consumer should respond to events, such as to shut down the thread, or otherwise continue forever. The typical consumer/producer exits when the queue is empty. For example, a thread waiting in
queue.get
cannot handle additional notifications.Each set of notes submitted by the producer should overwrite any unprocessed notes remaining on the queue.
Originally I had the consumer process one note at a time using the queue
module. I found continually acquiring and releasing the lock without any competition to be inefficient, and as previously noted, queue.get
prevents waiting on additional events. So instead of building upon that, I rewrote it into:
ANSWER
Answered 2021-Sep-22 at 19:54Analyzing thread-safety in Python can take into account the Global Interpreter Lock (GIL): no two threads will execute Python code simultaneously. Assignments to variables or object fields are effectively atomic (there are no half-assigned variables) and changes propagate effectively immediately to other threads.
This means that your use of Event.is_set()
is already equivalent to using plain booleans. An event is a bool guarded by a Condition. The is_set()
method checks the boolean directly. The set()
method acquires the Condition, sets the boolean, and notifies all waiting threads. The wait()
methods waits until the set()
method is invoked. The clear()
method acquires the Condition and unsets the boolean. Since you never wait()
for any Event, and setting the boolean is atomic, the Condition in the Event is effectively unused.
This might get rid of a couple of locks, but isn't really a huge efficiency win. A Condition is still an abstraction over a lock, but the built-in Queue type uses locks directly. Thus, I would assume that the built-in queue is no less performant than your solution, even for a single consumer.
Your main issue with the built-in queue is that “continually acquiring and releasing the lock without any competition [is] inefficient”. This is wrong on two counts:
- Due to Python's GIL, there is little competition in either case.
- Acquiring uncontested locks is very efficient.
So while your solution is probably sufficiently correct (I can see no opportunity for deadlock) it is unlikely to be particularly efficient. (There are just some small mistakes, like using stop
instead of stop.is_set()
and some syntax errors.)
If you are seeing poor performance with Python threads that's probably because of CPython, not because of the Queue type. I already mentioned that only one thread can run at a time due to the GIL. If multiple threads want to run, they must be scheduled by the operating system to do so and acquire the GIL. Each thread will wait for 5ms before asking the running thread to give up the GIL (in a manner quite similar to your interrupt flag). And then the thread can do useful work like acquiring a lock for a critical section that must not be interrupted by other threads.
Possibly, the solution could be to avoid CPython's threads.
- If you have multiple CPU-bound tasks, you must use multiple processes. CPython's threads will not run in parallel. However, communication between processes is more expensive.
- Consider whether you can combine the producer+consumer directly, possibly using features such as generators.
- For an easier time with juggling multiple tasks in the same thread, consider using async/await. Event loops are provided by the asyncio module. This is just as fast as Python's threads, with the caveat that tasks don't pre-empt (interrupt) each other. But this can be advantage: since a task can only be suspended at an
await
, you don't need most locks and it is easier to reason about correctness of the code. The downside is that async/await might have even higher latency than using threads. - Python has a concept of “executors” that make it easy and efficient to run tasks in separate threads (for I/O-bound tasks) or separate processes (for CPU-bound tasks).
- For communicating between multiple processes, use the types from the
multiprocessing
module (e.g. Queue, Connection, or Value).
QUESTION
Disclaimer: I am very new to F#.
I created a custom type for which I have an addition function. I wanted to extend it to allow addition with the standard +
operator (the type is simplified for conciseness):
ANSWER
Answered 2021-Aug-19 at 10:04You cannot do what you want to today in F#, see this RFC.
What you could do is create a global operator that does this:
QUESTION
After testing out a few other engines I've settled into Godot for my game development learning process and have really appreciated the conciseness of GDScript, the node/inheritance structure, and the way observer events are covered by signals. I've been building knowledge through various tutorials and by reading through the documentation.
Somehow I'm struggling to solve the very fundamental task of detecting a mouseclick on a sprite. (Well, on a sprite's parent node, either a Node2D or an Area2D.)
My process has been this:
- Create an Area2D node (called logo) with a Sprite child and a CollisionShape2D child
- Assign a texture to the Sprite node, and change the x and y extent values of the CollisionShape2D node to match the size of the Sprite's texture
- Connect the _on_logo_input_event(viewport, event, shape_idx) signal to the Area2D node's script (called logo.gd)
- Use the following code:
ANSWER
Answered 2021-Jul-15 at 19:52If the CollisionLayer
of your Area2D
is not empty, and input_pickable
is on, then it is capable to get input. Either by connecting the input_event
signal or by overriding _input_event
.
If that is not working, the likely cause is that there is some Control
/UI element that is stopping mouse events. They have a property called mouse_filter
, which is set to Stop
by default. You will need to find which Control
is intercepting the input, and set its mouse_filter
to Ignore
.
By the way, these:
The argument 'viewport' is never used in the function '_on_logo_input_event'. If this is intended, prefix it with an underscore: '_viewport'
The argument 'shape_idx' is never used in the function '_on_logo_input_event'. If this is intended, prefix it with an underscore: '_shape_idx'
These are warnings. They are not the source of the problem. They tell what they say on the tin: you have some parameter that you are not using, and you can prefix its name with an underscore as a way to suppress the warning.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install Conciseness
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page