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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?
...)
RaisePropertyChanged("ViewModelCopyOfSomeProperty");
}
But typically this is only needed if more than one object will be making changes to the Model's data, which is not usually the case.
If you ever have a case where you don't actually have a reference to your Model property to attach ...
What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
... working directory. I am aware that $(variable) name return the value inside the variable name, but what is $(command) supposed to return? Does it return the value after executing the command? In that case, we can use ` to execute the command.
...
CSS container div not getting height
...ng what height the child div s are going to have. I was trying out on JSFiddle . The container div is on red. which is not showing up. Why?
...
Pandas every nth row
... c
0 x x x
1 x x x
2 x x x
The index is floor-divved by the stride (2, in this case). If the index is non-numeric, instead do
# df.groupby(np.arange(len(df)) // 2).first()
df.groupby(pd.RangeIndex(len(df)) // 2).first()
a b c
0 x x x
1 x x x
2 x x x
...
Merge two Git repositories without breaking file history
...ove the old_a repo files and folders into a subdirectory so they don't collide with the other repo coming later
mkdir old_a
dir -exclude old_a | %{git mv $_.Name old_a}
# Commit the move
git commit -m "Move old_a files into subdir"
# Do the same thing for old_b
git remote add -f old_b <OldB rep...
Custom numeric format string to always display the sign
...
Fixed a bug whereby negatives did not get a minus.
– Roman Starkov
Oct 25 '11 at 16:10
...
PostgreSQL naming conventions
... case, etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers cas...
How do I script a “yes” response for installing programs?
...t the CPU. stackoverflow.com/a/18164007/720665
– David Salamon
Aug 2 '16 at 9:44
Nice. This just made my life substan...
How do I setup a SSL certificate for an express.js server?
...tline how to obtain the .pem files? I have two .crt files from my cert provider.
– SCBuergel.eth
Aug 10 '16 at 9:52
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What is a magic number, and why is it bad? [closed]
...th 25 can have some other bad side effects (i.e. your Session.Timeout = 50 call, which is also set to 25 and users start reporting too frequent timeouts).
Also, the code can be hard to understand, i.e. "if a < 50 then bla" - if you encounter that in the middle of a complicated function, other de...