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Community Discussions
Trending Discussions on R.tools
QUESTION
How do I use Filter with map in javascript in such a way that: var arrIds = [1, 3, 4] Menu.map only displays the values if the id's present in "arrIds array" matches with the ids present in "Menu".
...ANSWER
Answered 2021-Apr-24 at 09:12You can filter
the menu items before mapping
over them. You can use Array.prototype.includes
to check if the menu item id exists in the arrIds
array. If arrIds
is falsy or is an empty array, you can return true
to display all the menu items.
QUESTION
This is what my pom.xml looks like
...ANSWER
Answered 2021-Mar-15 at 04:35The BOM dependency should go in the section
QUESTION
Im using distributed pub/sub in an Akka.net cluster and I've begun seeing this error when pub/sub grows to approx. 1000 subscribers and 3000 publishers.
max allowed size 128000 bytes, actual size of encoded Akka.Cluster.Tools.PublishSubscribe.Internal.Delta was 325691 bytes
I don't know, but I'm guessing distributed pub/sub is trying to pass the pub/sub list to other actor systems on the cluster?
Anyway, I'm a little hesitant about boosting size limits because of this post. So what would be a reasonable approach to correcting this?
...ANSWER
Answered 2021-Mar-12 at 11:47You may want to tackle with distributed pub/sub HOCON settings. Messages in Akka.Cluster.DistributePubSub are grouped together and send as deltas. You may be interested in two settings:
akka.cluster.pub-sub.max-delta-elements = 3000
says how many items can maximally consist on delta message. 3000 is the default value and you may want to lower it in order to reduce the size of the delta message (which seems to be an issue in your case).akka.cluster.pub-sub.gossip-interval = 1s
indirectly affects how often gossips will be sent. The more often they're send, the smaller they may be - assuming continuously highly saturated channel.
If these won't help, you may also think about reducing the size of your custom messages by introducing custom serializers with smaller payload footprint.
QUESTION
Is there any way to use aspects in Spring Boot GraalVM native-image? I need it for logging purpose. I got following error on image run:
...ANSWER
Answered 2021-Feb-08 at 21:45I think you are right about the problem. If you were doing build time weaving, it would be totally fine as the modified byte code will be fed into GraalVM native-image
for analysis and inclusion in the image. If doing loadtime weaving I believe it can work but haven't confirmed recently if you use loadtime weaving at the point the native-image is being built (via setting the java options to include the aspectjweaver agent), the classes will be woven as they are loaded and the woven form will be included in the image. It can never really work at image runtime because there is no notion of classes any more, and classes cannot be dynamically defined.
So yes, since Spring AOP can be done quite late on, as configuration is resolved, there may be problems. Take a look at the spring native project for the very latest support building your Spring projects into native-images, but we have no samples there for Spring AOP right now as I recall. I'd encourage you to raise issues against that project, including a sample project that show your specific problem can be invaluable. You haven't mentioned how you are creating the native-image right now which may influence my recommendations. I think pushing some analysis/weaving a bit earlier in the process could make it work but haven't been into that space yet.
QUESTION
ANSWER
Answered 2021-Jan-02 at 13:37iframe=WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.XPATH, "/html/body/iframe")))
driver.switch_to.frame(iframe)
driver.find_element_by_tagname("a")
QUESTION
It is a well known fact Spring Webflux applications should not be blocking applications.
Was just wondering, is the app considered as blocking application, if there is a blocking call on start up, but no blocking call on business logic? Just a general question.
I have an example, (super easy to reproduce) where I am using Blockhound in order to test if the app is blocking. While instantiating Bloudhound in my unit and integration tests, the flow has been proven non blocking (very happy).
However, with a Blockhound instantiated on start up, Spring Webflux + Reactive Cassandra like this:
...ANSWER
Answered 2020-Dec-12 at 23:54Official response from Datastax team:
The error is happening when Spring is building the application context, which happens when the application starts. Blocking calls are usually allowed during this phase, even for reactive / non-blocking applications – otherwise, your application would be totally unable to read a config file, for instance – since this is a blocking call.
Actively working on JAVA-2449 right now. I will change Uuids.random() to use non-blocking stuff.
QUESTION
I want to make an internal grid view(room) added by clicking the button on the external recycler view(floor). but Null pointer extension occurs in onBindViewHolder. please help me
...ANSWER
Answered 2020-Nov-25 at 17:49The GridViewHolder
inside your FloorAdapter
is pointing to the wrong XML Id tag for the TextView that's why it's throwing NullPointerException
Change this in your GridViewHolder
QUESTION
I get a failure for the stage 'Static analysis' during my jenkins-pipeline.
Here is my Jenkinsfile :
...ANSWER
Answered 2020-Nov-21 at 17:16After investigation, it seems "androidLint" is not supported by "Warnings Next Generation Plugin", and has been replaced by "androidLintParser"
the correct step with Warning Next Generation plugin is :
QUESTION
I programmed a Discord bot with Java (Eclipse). If I start it via console in Eclipse, it works without problems. If I export it as a "Runnable JAR file" and start it with the start.bat file, it also works fine.
start.bat:
...ANSWER
Answered 2020-Sep-10 at 10:15The problem was that my friend's computer had a 32 bit system and the music library probably only runs on 64 bit systems.
QUESTION
When I try to send a message to the akka.net region proxy with the following code,
...ANSWER
Answered 2020-Aug-29 at 01:48The name was wrong, change the code like this, and everything is FINE!
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