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Exposing a port on a live Docker container
I'm trying to create a Docker container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map addi...
All Ruby tests raising: undefined method `authenticate' for nil:NilClass
...ion that worked for me.
You will need to log out an anonymous user before setting up variables:
before :each do
sign_out :user
end
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Difference between malloc and calloc?
...system with virtual memory.)
Some compilers even can optimize malloc + memset(0) into calloc for you, but you should use calloc explicitly if you want the memory to read as 0.
If you aren't going to ever read memory before writing it, use malloc so it can (potentially) give you dirty memory from i...
Inconsistent Accessibility: Parameter type is less accessible than method
...e.Content.ReadAsStringAsync().Result); The "Name_Of_My_Model" class wasn't set to either Public nor Private. Turned out I NEEDED to set the "Name_Of_My_Model" (class) to public to be used in a "public" method that had a WebMethod decorator above it for an ajax call I was doing.
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List comprehension in Ruby
... square brackets in the python example, to collapse the comprehension to a set of results. Ruby has no facility similar to generators.
– Guss
Sep 30 '14 at 18:30
4
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How can I update a single row in a ListView?
...h a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is getting called too frequently, since notifyDataSetChanged() calls getView() for all visible items. I want to update just the single ite...
Matching an empty input box using CSS
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Placeholder attribute have to be set. Anyway we can set placeholder attribute as whitespace.
– Piotr Kozłowski
May 30 '17 at 10:07
2
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Purpose of Activator.CreateInstance with example?
...ancyObject like this one below:
class MyFancyObject
{
public int A { get;set;}
}
It lets you turn:
String ClassName = "MyFancyObject";
Into
MyFancyObject obj;
Using
obj = (MyFancyObject)Activator.CreateInstance("MyAssembly", ClassName))
and can then do stuff like:
obj.A = 100;
That'...
Rename a dictionary key
Is there a way to rename a dictionary key, without reassigning its value to a new name and removing the old name key; and without iterating through dict key/value?
In case of OrderedDict, do the same, while keeping that key's position.
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Can scripts be inserted with innerHTML?
I tried to load some scripts into a page using innerHTML on a <div> . It appears that the script loads into the DOM, but it is never executed (at least in Firefox and Chrome). Is there a way to have scripts execute when inserting them with innerHTML ?
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