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Add a new line in file?
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Which terminal command to get just IP address and nothing else?
...e external IP
If you need the external IP, then you can query a text-mode service, for example curl https://ipecho.net/plain would return a plain text external IP.
And an even faster way to get the external IP is to query a known DNS server:
dig @ns1-1.akamaitech.net ANY whoami.akamai.net +short
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Is there a practical use for weak references? [duplicate]
...- in our example, we have a variety of listeners that must register with a service. The service keeps weak references to the listeners, while the instantiated classes keep strong references. If the classes at any time get GC'ed, the weak reference is all that remains of the listeners, which will t...
Do I need quotes for strings in YAML?
...'s a sample docker-compose.yml file to explain this concept:
version: "3"
services:
traefik:
image: traefik:v2.2.1
command:
- --api.insecure=true # Don't do that in production
- --providers.docker=true
- --providers.docker.exposedbydefault=false
- --entrypoints.web...
Gunicorn worker timeout error
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And then I suddenly realised I was limitting my resource too low for the service inside my compose file. This is the thing slowed down the application in my case
deploy:
replicas: 5
resources:
limits:
cpus: "0.1"
memory: 50M
restart_policy:
condition: on-failure
So I s...
How to refresh Android listview?
...calling the notifyDataSetChanged().
If you're working with a database or service backend you'll have to call the method to retrieve the information again (or manipulate the in memory data) before calling the notifyDataSetChanged().
The thing is this notifyDataSetChanged only works if the dataset ...
When is it acceptable to call GC.Collect?
...ector does. This is unlikely to be true in a multi user application, or a service that is responding to more then one request at a time.
However in some batch type processing you do know more then the GC. E.g. consider an application that.
Is given a list of file names on the command line
Proce...
PowerShell script not accepting $ (dollar) sign
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Change Oracle port from port 8080
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There are many Oracle components that run a web service, so it's not clear which you are referring to.
For example, the web site port for standalone OC4J is configured in the j2ee/home/config/default-web-site.xml file:
<web-site xmlns:xsi="http://www.w3.org/2001/XMLSc...
Background task, progress dialog, orientation change - is there any 100% working solution?
...nother approach is to ditch the AsyncTask and move your work into an IntentService. This is particularly useful if the work to be done may be long and should go on regardless of what the user does in terms of activities (e.g., downloading a large file). You can use an ordered broadcast Intent to eit...