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How do you roll back (reset) a Git repository to a particular commit? [duplicate]
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git reset --hard <tag/branch/commit id>
Notes:
git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)
If you wish to commit that state so that t...
When to use a “has_many :through” relation in Rails?
...oined and role
end
This introduces a new table, and eliminates the group_id column from the user's table.
The problem with this code is that you'd have to update every where else you use the user class and change it:
user.groups.first.name
# becomes
user.group_memberships.first.group.name
Th...
Showing the stack trace from a running Python application
..., signal
def debug(sig, frame):
"""Interrupt running process, and provide a python prompt for
interactive debugging."""
d={'_frame':frame} # Allow access to frame object.
d.update(frame.f_globals) # Unless shadowed by global
d.update(frame.f_locals)
i = code.Intera...
What does SynchronizationContext do?
...t query SynchronizationContext.Current at this point; if you queried it inside the code passed to ThreadPool.QueueUserWorkItem, you might get whatever synchronization context is associated with the thread pool's worker thread. Once you have stored a reference to Windows Forms' context, you can use i...
how to set desired language in git-gui?
...ct which can be found here: http://code.google.com/p/msysgit/issues/detail?id=302
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Custom CSS Scrollbar for Firefox
...5
And this for background info: https://bugzilla.mozilla.org/show_bug.cgi?id=1460109
There's no Firefox equivalent to ::-webkit-scrollbar and friends.
You'll have to stick with JavaScript.
Plenty of people would like this feature, see: https://bugzilla.mozilla.org/show_bug.cgi?id=77790
As far as ...
How do I catch an Ajax query post error?
...le success and error handlers.
Example:
$.post('status.ajax.php', {deviceId: id})
.done( function(msg) { ... } )
.fail( function(xhr, textStatus, errorThrown) {
alert(xhr.responseText);
});
Prior to jQuery 1.8, the function done was called success and fail was called error.
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Refresh image with a new one at the same url
I am accessing a link on my site that will provide a new image each time it is accessed.
19 Answers
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Non-static method requires a target
...s and you use those references in your lambda (e.g. ProductDetail.Products.ID) then that "Products" context remains null if you manually created the Entity.
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JavaScript: location.href to open in new window/tab?
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window.open(
'https://support.wwf.org.uk/earth_hour/index.php?type=individual',
'_blank' // <- This is what makes it open in a new window.
);
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