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How to use Comparator in Java to sort
... things with your example class:
it's called People while it has a price and info (more something for objects, not people);
when naming a class as a plural of something, it suggests it is an abstraction of more than one thing.
Anyway, here's a demo of how to use a Comparator<T>:
public c...
Why does the C++ STL not provide any “tree” containers?
Why does the C++ STL not provide any "tree" containers, and what's the best thing to use instead?
14 Answers
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How to print last two columns using awk
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Try and see. It does work Solaris 9 awk & nawk. The alternative is $(NF-1)
– jim mcnamara
Nov 29 '10 at 15:04
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Copy constructor for a class with unique_ptr
... make the class moveable, but not copyable. If you leave out the copy-ctor and copy-assignment, the compiler will guide your way on how to use a std::vector with move-only types.
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Update statement with inner join on Oracle
... WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE='blah'
AND EXISTS (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC);
Or you might be able to do this:
UPDATE
(SELECT table1.value as OLD, table2.CODE as NEW
FROM table1
INNER JOIN table...
JavaScript function to add X months to a date
...hs to a date in JavaScript (source). It takes into account year roll-overs and varying month lengths:
function addMonths(date, months) {
var d = date.getDate();
date.setMonth(date.getMonth() + +months);
if (date.getDate() != d) {
date.setDate(0);
}
return date;
...
Why do Lua arrays(tables) start at 1 instead of 0?
I don't understand the rationale behind the decision of this part of Lua. Why does indexing start at 1? I have read (as many others did) this great paper . It seems to me a strange corner of a language that is very pleasant to learn and program. Don't get me wrong, Lua is just great but there has t...
How to check that an element is in a std::set?
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this is specific for sets and maps. vectors, lists etc. don't have a find member function.
– wilhelmtell
Nov 9 '09 at 13:53
11
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Count the number of occurrences of a string in a VARCHAR field?
...wesome, just what I needed! But note, that LENGTH() is not multi-byte safe and you might run into strange errors. Use CHAR_LENGTH() instead:)
– nico gawenda
Apr 29 '13 at 23:28
1
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LINQ, Where() vs FindAll()
Can someone explain how the LINQ functions Where(..) and FindAll(..) differ? They both seem to do the same thing...
4 Answe...