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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?
...tion. They typically only contain data, so would not have methods such as DrawCard() (that would be in a ViewModel)
So you would probably have plain Model data objects like these:
class CardModel
{
int Score;
SuitEnum Suit;
CardEnum CardValue;
}
class PlayerModel
{
ObservableColl...
How to get the unix timestamp in C#
... The unix timestamp is traditionally a 32 bit integer, and has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC.
– the_nuts
Aug 4 '14 at 13:43
100
...
How can a LEFT OUTER JOIN return more records than exist in the left table?
...dition as key equality join only. It can be arbitrary condition, e.g. date ranges, inequalities, etc. Two extreme cases: (a) N rows have not a single match among M rows, then left outer join results in N rows matched up with NULLs. (b) every of N rows matches all of M rows, then result is N x M rows...
Get list from pandas DataFrame column headers
...s are all possible.
df = pd.DataFrame('x', columns=['A', 'B', 'C'], index=range(5))
df
A B C
0 x x x
1 x x x
2 x x x
3 x x x
4 x x x
If you want a list....
[*df]
# ['A', 'B', 'C']
Or, if you want a set,
{*df}
# {'A', 'B', 'C'}
Or, if you want a tuple,
*df, # Please...
Apply formula to the entire column
...
This answer works for a much wider range of formulas, and should be the accepted answer
– phlare
May 7 '19 at 21:31
1
...
RegEx for matching UK Postcodes
... ^^
The regex is missing a - here to indicate a range of characters. As it stands, if a postcode is in the format ANA NAA (where A represents a letter and N represents a number), and it begins with anything other than A or Z, it will fail.
That means it will match A1A 1AA...
Coalesce function for PHP?
...d array element is falsey will result in an error. $input['properties']['range_low'] ?: '?'
– Keyo
Jul 12 '11 at 23:28
...
What's the simplest way to print a Java array?
...
@YassinHajaj Both. For instance if you want to have a range stream over the array the idiomatic way using Stream.of would be to do .skip(n).limit(m). The current implementation does not return a SIZED stream whereas Arrays.stream(T[], int, int) does, leading to better splitting ...
How do I revert an SVN commit?
...
Both examples must work, but
svn merge -r UPREV:LOWREV . undo range
svn merge -c -REV . undo single revision
in this syntax - if current dir is WC and (as in must done after every merge) you'll commit results
Do you want to see logs?
...
ToList()— does it create a new list?
...behaviour:
public static void RunChangeList()
{
var objs = Enumerable.Range(0, 10).Select(_ => new MyObject() { SimpleInt = 0 });
var whatInt = ChangeToList(objs); // whatInt gets 0
}
public static int ChangeToList(IEnumerable<MyObject> objects)
{
var objectList = objects.To...