To check if the item is in the list, Python tests for object identity first, and then tests for equality only if the objects are different.1 float(“NaN”) in [float(“NaN”)] is False because two different NaN objects are involved in the comparison. The test for identity therefore returns False, and then the test for equality also … Read more
From the docker host Use the docker inspect command: docker inspect –format=”{{.HostConfig.Privileged}}” <container id> And within a bash script you could have a test: if [[ $(docker inspect –format=”{{.HostConfig.Privileged}}” <container id>) == “false” ]]; then echo not privileged else echo privileged fi From inside the container itself You have to try to run a command … Read more
You can’t copy arrays by value like that. Here are several solutions, but I recommend #4 for your needs: Use an std::vector instead of an array. Use a map of pointers to arrays of 3 elements: int red[3] = {1,0,0}; int green[3] = {0,1,0}; int blue[3] = {0,0,1}; std::map<int,int(*)[3]> colours; colours.insert(std::pair<int,int(*)[3]>(GLUT_LEFT_BUTTON,&red)); colours.insert(std::pair<int,int(*)[3]>(GLUT_MIDDLE_BUTTON,&blue)); colours.insert(std::pair<int,int(*)[3]>(GLUT_RIGHT_BUTTON,&green)); // Watch … Read more
Unfortunately ENV won’t work, because windows environment variable work a little differently than linux. more info As of now the only way to do this is through RUN But you don’t need to create a separate file to do this. This can be done by the following much simpler one line command: RUN setx path … Read more
Pass a reference to the Bar object, like so: class Foo(object): def __init__(self): self.text = “Hello World” # has to be created first, so Bar.__init__ can reference it self.bar = Bar(self) class Bar(object): def __init__(self, parent): self.parent = parent self.newText = parent.text foo = Foo() Edit: as pointed out by @thomleo, this can cause problems … Read more
The rc-update tool is a part of the openrc package which is not included in the base image. apk add openrc
Actually, processes A & B that use a shared library libc.so can share the same memory. Somewhat un-intuitively it depends on which docker storage driver you’re using. If you use a storage driver that can expose the shared library files as originating from the same device/inode when they reside in the same docker layer then … Read more
From Kubernetes API reference: envFrom : List of sources to populate environment variables in the container. The keys defined within a source must be a C_IDENTIFIER. All invalid keys will be reported as an event when the container is starting. When a key exists in multiple sources, the value associated with the last source will … Read more
It seems that when using the docker-compose command it saves an intermediate container that it doesnt show you and constantly reruns that never updating it correctly. Sadly the documentation regarding something like this is poor. The way to fix this is to build it first with no cache and then up it like so docker-compose … Read more
You can access the container’s id by calling ((ViewGroup)getView().getParent()).getId();