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Deleting lines from one file which are in another file
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Bernhard Barker
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answered Jan 24 '11 at 9:06
gabuzogabuzo
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More elegant “ps aux | grep -v grep”
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283
The usual technique is this:
ps aux | egrep '[t]erminal'
This will match lines containing ter...
Automate ssh-keygen -t rsa so it does not ask for a passphrase
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232
To generate a SSH keypair without being prompted for a passphrase you can do the following:
$ ...
Popup弹出菜单扩展 · App Inventor 2 中文网
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How can I kill a process by name instead of PID?
...ooshshoosh
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Python memoising/deferred lookup property decorator
...est()
>>> t.__dict__
{}
>>> t.a
generating "a"
[0, 1, 2, 3, 4]
>>> t.__dict__
{'_lazy_a': [0, 1, 2, 3, 4]}
>>> t.a
[0, 1, 2, 3, 4]
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What is the most efficient/elegant way to parse a flat table into a tree?
...id, descendant_id) VALUES
(1,1), (1,2), (1,4), (1,6),
(2,2), (2,4),
(3,3), (3,5),
(4,4),
(5,5),
(6,6);
Now you can get a tree starting at node 1 like this:
SELECT f.*
FROM FlatTable f
JOIN ClosureTable a ON (f.id = a.descendant_id)
WHERE a.ancestor_id = 1;
The output (in MySQL c...
How to get the difference between two arrays of objects in JavaScript
...g only native JS, something like this will work:
a = [{ value:"4a55eff3-1e0d-4a81-9105-3ddd7521d642", display:"Jamsheer"}, { value:"644838b3-604d-4899-8b78-09e4799f586f", display:"Muhammed"}, { value:"b6ee537a-375c-45bd-b9d4-4dd84a75041d", display:"Ravi"}, { value:"e97339e1-939d-47ab-974c-1b68c...
HTML Form: Select-Option vs Datalist-Option
...r3167654user3167654
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Is std::vector copying the objects with a push_back?
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Liz AlbinLiz Albin
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