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Java “params” in method signature?
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In Java it's called varargs, and the syntax looks like a regular parameter, but with an ellipsis ("...") after the type:
public void foo(Object... bar) {
for (Object baz : bar) {
System.out.println(baz.toString());
}
}
The vararg parameter must alw...
How to change to an older version of Node.js
...nvm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash
You can find it at https://github.com/creationix/nvm
It allows you to easily install and manage multiple versions of node. Here's a snippet from the help:
Usage:
nvm install <version> Download a...
How to automatically generate getters and setters in Android Studio
Is there a shortcut in Android Studio for automatically generating the getters and setters in a given class?
15 Answers
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Why are trailing commas allowed in a list?
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This makes the (most) sense, but I would really be surprised if the parser of the language was designed to make diffs easier.
– Burhan Khalid
Jul 22 '12 at 6:00
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How to check certificate name and alias in keystore files?
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In order to get all the details I had to add the -v option to romaintaz answer:
keytool -v -list -keystore <FileName>.keystore
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How can I update npm on Windows?
...best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to update npm going forward. Also if you run the No...
How to delete history of last 10 commands in shell?
...tory -d 1006; done; history -d $(history 1 | awk '{print $1}')
Wrap this all up in a function to add to your ~/.bashrc:
histdel(){
for h in $(seq $1 $2); do
history -d $1
done
history -d $(history 1 | awk '{print $1}')
}
Example deleting command 4, 5 and 6 (1049-1051) and hiding the...
Why shouldn't all functions be async by default?
...kind words. It is indeed an awesome feature and I am glad to have been a small part of it.
If all my code is slowly turning async, why not just make it all async by default?
Well, you're exaggerating; all your code isn't turning async. When you add two "plain" integers together, you're not awa...
MPICH vs OpenMPI
...xtensive optimizations that make it the preferred implementation in nearly all cases.
Feature Support from the Latest MPI Standard
An orthogonal axis to hardware/platform support is coverage of the MPI standard. Here MPICH is usually far and away superior. MPICH has been the first implementation...
“did you run git update-server-info” error on a Github repository
...e repo. Added the github account as a collaborator for the repo and that fixed it.
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