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What is the (best) way to manage permissions for Docker shared volumes?
...ther than data containers.
I believe the canonical way to solve this is by using data-only containers. With this approach, all access to the volume data is via containers that use -volumes-from the data container, so the host uid/gid doesn't matter.
For example, one use case given in the documen...
How to round up a number to nearest 10?
...
floor() will go down.
ceil() will go up.
round() will go to nearest by default.
Divide by 10, do the ceil, then multiply by 10 to reduce the significant digits.
$number = ceil($input / 10) * 10;
Edit: I've been doing it this way for so long.. but TallGreenTree's answer is cleaner.
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What is the difference between concurrent programming and parallel programming?
...mproving throughput. The difficulties of concurrent programming are evaded by making control flow deterministic. Typically, programs spawn sets of child tasks that run in parallel and the parent task only continues once every subtask has finished. This makes parallel programs much easier to debug th...
Retaining file permissions with Git
...ontrol my web server as described in Version control for my web server , by creating a git repo out of my /var/www directory . My hope was that I would then be able to push web content from our dev server to github, pull it to our production server, and spend the rest of the day at the pool.
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How do I sort an NSMutableArray with custom objects in it?
...d let's say they are 'Person' objects. I want to sort the NSMutableArray by Person.birthDate which is an NSDate .
27 Ans...
Should I use px or rem value units in my CSS? [closed]
... the beginning, the only way to provide users a way to scale text size was by using relative size units (such as ems). This is because the browser's font size menu simply changed the root font size. Thus, if you specified font sizes in px, they wouldn't scale when changing the browser's font size ...
Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...s referring to when it says "MissingRequiredValidatorError"
I thought that by updating post_params and giving it :image it would be fine, as both create and update use post_params
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How do I kill background processes / jobs when my shell script exits?
...n't require job control, and may also get some grandchild processes missed by other solutions.
– michaeljt
Dec 13 '12 at 9:17
5
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Is a Python dictionary an example of a hash table?
...le. You can read a description of python's dict implementation, as written by Tim Peters, here.
That's why you can't use something 'not hashable' as a dict key, like a list:
>>> a = {}
>>> b = ['some', 'list']
>>> hash(b)
Traceback (most recent call last):
File "<st...
How do I temporarily disable triggers in PostgreSQL?
...e all trigger modifications much more cheaply after the fact than on a row-by-row basis.
6 Answers
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