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Obtaining a powerset of a set in Java
...2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<Set<T>> sets = new HashSet<Set<T>>();
if (originalSet.isEmpty()) {
sets.add(new HashS...
Query to list all stored procedures
...[master].INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE = 'PROCEDURE'
AND LEFT(ROUTINE_NAME, 3) NOT IN ('sp_', 'xp_', 'ms_')
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Finding all possible permutations of a given string in python
... not specified or is None, then r defaults to the length of the
iterable and all possible full-length permutations are generated.
Permutations are emitted in lexicographic sort order. So, if the input
iterable is sorted, the permutation tuples will be produced in sorted
order.
You'll ha...
Why can't decimal numbers be represented exactly in binary?
...e the == operator to compare it to another floating-point number. I understand the principles behind floating-point representation.
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Rails migration: t.references with alternative name?
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This works on Rails 5.1 and none of the other suggestions do. It's much cleaner, and feels right.
– stephenmurdoch
May 6 '17 at 2:03
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What's the best way to iterate an Android Cursor?
...rating over the result of a database query, doing something with each row, and then moving on to the next row. Typical examples are as follows.
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LINQ query to select top five
... +1, but gah, wrapping multiline expressions in parentheses and then de-referencing the whole lot really grates me for some reason.
– Doctor Jones
Jul 29 '14 at 13:00
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Freely convert between List and IEnumerable
...can I convert a List<MyObject> to an IEnumerable<MyObject> and then back again?
6 Answers
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Make fill entire screen?
...height left my background white w/o the background-color applied when I expanded some collapsible divs in the middle of my page. min-height fixed that.
– Stephen P
Mar 9 '13 at 1:03
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Where can I find the “clamp” function in .NET?
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Where would I put this and is calling CompareTo slower than comparing with < (for integral types)?
– Danvil
Apr 21 '10 at 13:55
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