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Generating a UUID in Postgres for Insert statement?
...ware of the concept of a UUID and I want to generate one to refer to each 'item' from a 'store' in my DB with. Seems reasonable right?
...
Android: create a popup that has multiple selection options
...there and then pass the array to an AlertDialog.Builder with the method setItems(CharSequence[], DialogInterface.OnClickListener).
An example:
String[] colors = {"red", "green", "blue", "black"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builde...
How to change ViewPager's page?
...our question, I'm guessing that what you're looking for is pager.setCurrentItem( num ). That allows you to programatically switch to another page within the ViewPager.
I'd need to see a stack trace from logcat to be more specific if this is not the problem.
...
How to implement a ConfigurationSection with a ConfigurationElementCollection
...= false)]
[ConfigurationCollection(typeof(ServiceCollection),
AddItemName = "add",
ClearItemsName = "clear",
RemoveItemName = "remove")]
public ServiceCollection Services
{
get
{
return (ServiceCollection)base["Services"];
}
}
}
And that ...
Why does my application spend 24% of its life doing a null check?
...ap compacting algorithm otherwise having an unpredictable affect on that. Best to not let me guess at this, measure so you know a fact.
– Hans Passant
May 15 '13 at 11:21
11
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Django select only rows with duplicate field values
... .filter(id__count__gt=1)
Literal.objects.filter(name__in=[item['name'] for item in dupes])
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Why does String.valueOf(null) throw a NullPointerException?
...the story
There are several important ones:
Effective Java 2nd Edition, Item 41: Use overloading judiciously
Just because you can overload, doesn't mean you should every time
They can cause confusion (especially if the methods do wildly different things)
Using good IDE, you can check which ove...
right click context menu for datagridview
...tons.Right)
{
ContextMenu m = new ContextMenu();
m.MenuItems.Add(new MenuItem("Cut"));
m.MenuItems.Add(new MenuItem("Copy"));
m.MenuItems.Add(new MenuItem("Paste"));
int currentMouseOverRow = dataGridView1.HitTest(e.X,e.Y).RowIndex;
if (currentMo...
How to override the copy/deepcopy operations for a Python object?
...w__(cls)
memo[id(self)] = result
for k, v in self.__dict__.items():
setattr(result, k, deepcopy(v, memo))
return result
a = A()
a.v = 11
b1, b2 = copy(a), deepcopy(a)
a.v = 12
a.z.append(5)
print b1.v, b1.z
print b2.v, b2.z
prints
init
11 [2, 3, 4, 5]
11 [2, 3...
Meaning of @classmethod and @staticmethod for beginner? [duplicate]
...ass methods be regarded as "alternative constructors"? I think this is the best explanation so far!
– Cryptoharf84
Aug 28 '19 at 17:45
1
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