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PostgreSQL: Which Datatype should be used for Currency?
... have to deal with multiple currencies you'll need that much precision for converting. No matter what I'm presenting a user, I always store to US Dollar. In that way I can readily convert to any other currency, given the conversion rate for the day involved.
If you never do anything but one curre...
Sort objects in ArrayList by date?
...e(Date datetime) {
this.dateTime = datetime;
}
@Override
public int compareTo(MyObject o) {
return getDateTime().compareTo(o.getDateTime());
}
}
And then you sort it by calling:
Collections.sort(myList);
However sometimes you don't want to change your model, like when you want ...
How can you iterate over the elements of an std::tuple?
... @ViktorSehr AFAICT it doesn't (at least on GCC 4.7.2)? Anyone with a hint?
– sehe
Apr 8 '13 at 7:55
@ViktorSehr F...
Static nested class in Java, why?
...her members of the enclosing class.
...
Note: A static nested class interacts with the instance members of its outer class (and other classes) just like any other top-level class. In effect, a static nested class is behaviorally a top-level class that has been nested in another top-level clas...
C#: Printing all properties of an object [duplicate]
...ere you can an object name (while in debug mode), press enter, and it is printed fairly prettily with all its stuff.
9 Answ...
What does {0} mean when initializing an object?
...licitly initialized shall be
default-initialized.
Example:
struct S { int a; char* b; int c; };
S ss = { 1, "asdf" };
initializes ss.a with 1, ss.b with
"asdf", and ss.c with the value of an
expression of the form int(), that is,
0.
You can find the complete spec on this topic her...
How can I represent an 'Enum' in Python?
...TWO')
>>> Numbers.ZERO
0
>>> Numbers.ONE
1
Support for converting the values back to names can be added this way:
def enum(*sequential, **named):
enums = dict(zip(sequential, range(len(sequential))), **named)
reverse = dict((value, key) for key, value in enums.iteritems(...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
... Basic books talk about them to a certain extent, but they never really go into any real detail.
13 Answers
...
Error: free(): invalid next size (fast):
...
It means that you have a memory error. You may be trying to free a pointer that wasn't allocated by malloc (or delete an object that wasn't created by new) or you may be trying to free/delete such an object more than once. You may be overflowing a buffer or otherwise writing to memory to whic...
Retain precision with double in Java
The above code prints:
22 Answers
22
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