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How to get all subsets of a set? (powerset)
... = [a for a in A]
ps = set()
for i in range(2 ** length):
selector = f'{i:0{length}b}'
subset = {l[j] for j, bit in enumerate(selector) if bit == '1'}
ps.add(frozenset(subset))
return ps
If you want exactly the output you posted in your answer use this:
>&...
How do you use vim's quickfix feature?
... <Enter> :.cc | wincmd p<CR> (again untested) and use Enter to select an error without switching out of the quickfix window.
– DrAl
Nov 17 '09 at 9:45
1
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How to use Google App Engine with my own naked domain (not subdomain)?
...es offer naked domain redirection.
Login to your google apps account and select "manage this domain"
Navigate to Domain settings
Within Domain Setings, navigate to Domain names
There's a link that says "change the A record". Clicking that will give you the destination IPs for the A records you nee...
Can I nest a element inside an using HTML5?
...e toolbar state)
<object> (if the usemap attribute is present)
<select>
<textarea>
<video> (if the controls attribute is present)
If you are trying to have a button that links to somewhere, wrap that button inside a <form> tag as such:
<form style="display: in...
Does Python have a ternary conditional operator?
... This one emphasizes the primary intent of the ternary operator: value selection. It also shows that more than one ternary can be chained together into a single expression.
– Roy Tinker
Oct 4 '10 at 21:14
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Android Studio - Where can I see callstack while debugging an android app?
...
At the bottom panel you should have "5: Debug". Click on it and select "Debugger -> Threads"
You may need to find the "Threads" icon on the far right, or even click the "Restore Layout" button on the left to restore this window.
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optional parameters in SQL Server stored proc?
...rameter*/
INSERT INTO ........
END
/* and use it in the query as so*/
SELECT *
FROM Table
WHERE Column = @Parameter
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Do while loop in SQL Server 2008
...ECLARE Id INT, @Title VARCHAR(50)
DECLARE Iterator CURSOR FORWARD_ONLY FOR
SELECT Id, Title FROM dbo.SourceTable
OPEN Iterator
WHILE 1=1 BEGIN
FETCH NEXT FROM @InputTable INTO @Id, @Title
IF @@FETCH_STATUS < 0 BREAK
PRINT 'Do something with ' + @Title
END
CLOSE Iterator
DEALLOCATE Ite...
Form onSubmit determine which submit button was pressed [duplicate]
...() == "delete") {
return confirm("Are you sure you want to delete the selected item?");
}
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Which Java Collection should I use?
In this question How can I efficiently select a Standard Library container in C++11? is a handy flow chart to use when choosing C++ collections.
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