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How to get unique values in an array
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Update 18-04-2017
It appears as though 'Array.prototype.includes' now has widespread support in the latest versions of the mainline browsers (compatibility)
Update 29-07-2015:
There are plans in the works for browsers to support a standardized 'Array.prototype.includes' method, which alth...
Is UML practical? [closed]
...carefully about what they're doing, but a professional programmer already knows what they're doing. Most of the time, writing the code itself is quicker and more effective than writing about the code, because their programming intuition is tuned to the task.
It's not just about what you're doing t...
Python nonlocal statement
...: 2
# outer: 1
# global: 0
To this, using nonlocal, where inner()'s x is now also outer()'s x:
x = 0
def outer():
x = 1
def inner():
nonlocal x
x = 2
print("inner:", x)
inner()
print("outer:", x)
outer()
print("global:", x)
# inner: 2
# outer: 2
# global...
Read url to string in few lines of java code
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Now that some time has passed since the original answer was accepted, there's a better approach:
String out = new Scanner(new URL("http://www.google.com").openStream(), "UTF-8").useDelimiter("\\A").next();
If you want a s...
Is it possible to use JavaScript to change the meta-tags of the page?
...cription]').attr('content', new_description);
I think it does matter for now, since google said that they will index ajax content via #!hashes and _escaped_fragment_ calls. And now they can verify it (even automatically, with headless browsers, see the 'Creating HTML Snapshots' link on the page me...
gitosis vs gitolite? [closed]
...git is available on the remote server, you can do what you're asking right now, without doing anything
ssh [user@]server
cd repos/are/here/
mkdir project.git
cd project.git
git init --bare
Locally:
cd projects/are/here/project
git remote add origin [user@]server:repos/are/here/project.git
git pu...
Installing R with Homebrew
... I got error: Error: homebrew/science was deprecated. This tap is now empty as all its formulae were migrated.
– Menglong Li
Jul 3 '18 at 13:24
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How to run only one task in ansible playbook?
... role/stuff/tasks/main.yml
- name: do stuff
when: stuff|default(false)
Now, this task will not fire by default, but only if I set the stuff=true
$ ansible-playbook -e '{"stuff":true}'
or in a playbook:
roles:
- {"role":"stuff", "stuff":true}
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How to resolve “local edit, incoming delete upon update” message
...nd commited first. As a good svn citizen you do an update before a commit. Now you have a conflict. Realising that deleting the file is the right thing to do you delete the file from your working copy. Instead of being content svn now complains that the local files are missing and that there is a co...
Cannot ignore .idea/workspace.xml - keeps popping up
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I had this problem just now, I had to do git rm -f .idea/workspace.xml
now it seems to be gone (I also had to put it into .gitignore)
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impro...