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How to copy Java Collections list
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To create a deep copy, the List, via either mechanism, would have to have intricate knowledge of the underlying type. In the case of Strings, which are immutable in Java (and .NET for that matter), you don't even need a deep copy. In the case of MySpecialObject, you need to know how to make a deep ...
How Pony (ORM) does its tricks?
Pony ORM does the nice trick of converting a generator expression into SQL. Example:
1 Answer
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Differences and relationship between glActiveTexture and glBindTexture
...truct. So you might have an object defined like this:
struct Object
{
int count;
float opacity;
char *name;
};
The object has certain values stored in it and it has state. OpenGL objects have state too.
Changing State
In C/C++, if you have an instance of type Object, you would chang...
How to create Temp table with SELECT * INTO tempTable FROM CTE Query
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Sample DDL
create table #Temp
(
EventID int,
EventTitle Varchar(50),
EventStartDate DateTime,
EventEndDate DatetIme,
EventEnumDays int,
EventStartTime Datetime,
EventEndTime DateTime,
EventRecurring Bit,
EventType int
)
;WI...
Collect successive pairs from a stream
...to make some calculations. Most common usage is to calculate differences:
int[] pairwiseDiffs = IntStreamEx.of(input).pairMap((a, b) -> (b-a)).toArray();
For object stream you can create any other object type. My library does not provide any new user-visible data structures like Pair (that's t...
Use “ENTER” key on softkeyboard instead of clicking button
...xt.setOnKeyListener(new OnKeyListener()
{
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if (event.getAction() == KeyEvent.ACTION_DOWN)
{
switch (keyCode)
{
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.K...
How to get the Android device's primary e-mail address
...this);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle arguments) {
return new CursorLoader(this,
// Retrieve data rows for the device user's 'profile' contact.
Uri.withAppendedPath(
ContactsContract.P...
How do you check in python whether a string contains only numbers?
...superscript zero), does pass isdigit, but raises a ValueError if passed to int().
– danpalmer
Mar 4 '19 at 12:04
add a comment
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Is there a performance difference between i++ and ++i in C?
... code for this function,
both with ++i and i++.
$ cat i++.c
extern void g(int i);
void f()
{
int i;
for (i = 0; i < 100; i++)
g(i);
}
The files are the same, except for ++i and i++:
$ diff i++.c ++i.c
6c6
< for (i = 0; i < 100; i++)
---
> for (i = 0; i < ...
How to crop an image using C#?
... @KvanTTT, both of them are pretty slow if you want to crop a big image into smaller ones.
– JBeurer
Feb 1 '13 at 7:20
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