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Downcasting shared_ptr to shared_ptr?
...cast, and you wish you could have a little bit of both worlds. It is well known that dynamic_cast has a runtime overhead, but it is safer, whereas static_cast has no overhead at all, but it may fail silently. How nice it would be if you could use shared_dynamic_cast in debug builds, and shared_stati...
Good ways to sort a queryset? - Django
... (487)
Gerald Rudolph (464)
Ulysses Simpson (474)
Harry Truman (471)
And now the combined order_by call:
>>> myauths = Author.objects.order_by('-score', 'last_name')[:5]
>>> for x in myauths: print x
...
James Monroe (487)
Ulysses Simpson (474)
Harry Truman (471)
Benjamin Harri...
How do I include a pipe | in my linux find -exec command?
...s, and none of the files there have spaces so I don't bother with print0. Now my documents directory, on the other hand, I remember the print0.
– Paul Tomblin
Nov 21 '08 at 15:12
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CSS Pseudo-classes with inline styles
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@Thaina It is now, in HTML5: html5doctor.com/the-scoped-attribute
– Ason
Dec 17 '16 at 7:34
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Configuring Git over SSH to login once
...gen or ssh-add. In my ~/.ssh/ directory I only have two files: config and known_hosts. It seems that ssh-add requires another file ~/.ssh/id_rsa. Should I create that file first using ssh-keygen as @Jefromi explained?
– reprogrammer
Oct 20 '09 at 17:22
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Possible to iterate backwards through a foreach?
I know I could use a for statement and achieve the same effect, but can I loop backwards through a foreach loop in C#?
...
WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings
...our answer immediately, then took the vote back to see whether it worked. Now that it's working, I can't re-apply the vote again. Not sure why SO has that rule in place.
– Drew Noakes
Aug 27 '09 at 11:17
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Android : difference between invisible and gone?
...e idea with some pictures.
Assume that you have three buttons, like below
Now if you set visibility of Button Two as invisible (View.INVISIBLE), then output will be
And when you set visibility of Button Two as gone (View.GONE) then output will be
Hope this will clear your doubts.
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The following untracked working tree files would be overwritten by merge, but I don't care
...ith the following:
-x ignored files are also removed as well as files unknown to Git.
-d remove untracked directories in addition to untracked files.
-f is required to force it to run.
Here is the link that can be helpful as well.
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What blocks Ruby, Python to get Javascript V8 speed? [closed]
...mple, for certain operations, Rubinius's Hash class is faster than YARV's. Now, this doesn't sound terribly exciting until you realize that Rubinius's Hash class is implemented in 100% pure Ruby, while YARV's is implemented in 100% hand-optimized C.
So, at least in some cases, Rubinius can generate...