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Safely limiting Ansible playbooks to a single machine?
...ok's hosts using a variable, then passing in a specific host address via --extra-vars:
# file: user.yml (playbook)
---
- hosts: '{{ target }}'
user: ...
Running the playbook:
ansible-playbook user.yml --extra-vars "target=imac-2.local"
If {{ target }} isn't defined, the playbook does nothin...
Should you always favor xrange() over range()?
...ter, and a bit more memory efficient. But the gain is not very large.
The extra memory used by a list is of course not just wasted, lists have more functionality (slice, repeat, insert, ...). Exact differences can be found in the documentation. There is no bonehard rule, use what is needed.
Python...
How can I disable logging while running unit tests in Python Django?
... Sounds like an import issue. Are you setting TEST_RUNNER to a string path to the runner (not the actual Python module)? Also, where is your runner located? I have mine in a separate app named helpers, which only has utils that don't import from anywhere else within the project.
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How do you convert a JavaScript date to UTC?
...
The toISOString() method returns a string in simplified extended ISO
format (ISO 8601), which is always 24 or 27 characters long
(YYYY-MM-DDTHH:mm:ss.sssZ or ±YYYYYY-MM-DDTHH:mm:ss.sssZ,
respectively). The timezone is always ze...
Do checkbox inputs only post data if they're checked?
...box field), and checking the checkbox, the post value is a comma separated string of the values, ie. something like "0,1"
– ʞᴉɯ
Oct 5 '16 at 11:16
1
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How to run a single test with Mocha?
... there's a catch: grep option needs to be a ´RegExp()´ object. If it's a string, it will be escaped.
– h-kippo
Nov 21 '14 at 7:42
1
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Can't install Ruby under Lion with RVM – GCC issues
....1), but after installing readline rvm pkg install readline and passing an extra parameter rvm install 1.9.3 --with-gcc=clang --with-readline-dir=$rvm_path/usr it installed successfully.
– leandro
Nov 27 '11 at 13:01
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How to concatenate text from multiple rows into a single text string in SQL server?
... more compact way if you can concat the commas at the beginning and use substring to skip the first one so you don't need to do a sub-query:
SELECT DISTINCT ST2.SubjectID,
SUBSTRING(
(
SELECT ','+ST1.StudentName AS [text()]
FROM dbo.Students ST1
WHE...
Get folder name from full file path
...
See DirectoryInfo.Name:
string dirName = new DirectoryInfo(@"c:\projects\roott\wsdlproj\devlop\beta2\text").Name;
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How does Python's super() work with multiple inheritance?
...eyword parameters: accept more parameters than the method uses, and ignore extra ones. Its generally considered ugly to do this, and for most cases adding new methods is better, but init is (nearly?) unique as a special method name but with user defined parameters.
– lifeless
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