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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
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By default Entity Framework uses lazy-loading for navigation properties. That's why these properties should be marked as virtual - EF creates proxy class for your entity and overrides navigation properties to allow lazy-loadi...
Using SSH keys inside docker container
..._rsa && \
chmod 600 /root/.ssh/id_rsa.pub
# Avoid cache purge by adding requirements first
ADD ./requirements.txt /app/requirements.txt
WORKDIR /app/
RUN pip install -r requirements.txt
# Remove SSH keys
RUN rm -rf /root/.ssh/
# Add the rest of the files
ADD . .
CMD python manage.p...
How to start new activity on button click
...ntView(R.layout.main_activity);
Button button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(view.getContext(), AnActivity.c...
How do I remove the passphrase for the SSH key without having to create a new key?
...e. The latest versions of gpg-agent also support the protocol that is used by ssh-agent.
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Update data in ListFragment as part of ViewPager
...ents. The ViewPager is on a vertical phone screen, the lists are not side-by-side.
10 Answers
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How do I hide a menu item in the actionbar?
... then inside onCreateOptionsMenu(Menu) obtain a reference to the MenuItem (by calling menu.findItem()) and call setVisible() on it
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Replacing a fragment with another fragment inside activity group
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@Ahmed The reason is that, by architecture, the system replaces every <fragment> tag with the view (group) provided by the corresponding fragments' onCreateView(). Thus, as you can assume, any reference to the fragment is actually lost at the vie...
MySQL join with where clause
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Restoring Nuget References?
...rupted, you will loss all your package references and will need to add one-by-one to every project in your solution.
– Bill Velasquez
Aug 13 '14 at 14:54
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Maven: add a dependency to a jar by relative path
... I want the jar to be in a 3rdparty lib in source control, and link to it by relative path from the pom.xml file.
If you really want this (understand, if you can't use a corporate repository), then my advice would be to use a "file repository" local to the project and to not use a system scoped d...