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How to dynamic new Anonymous Class?
...ould add or remove fields on the fly.
edit
Sure you can: just cast it to IDictionary<string, object>. Then you can use the indexer.
You use the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age = 33;
forea...
Elegant setup of Python logging in Django
... - the corresponding value will be a dict in which each key is a formatter id and each value is a dict describing how to configure the corresponding Formatter instance.
filters - the corresponding value will be a dict in which each key is a filter id and each value is a dict describing how to config...
What's an elegant way to conditionally add a class to an HTML element in a view?
...usually you should represent success with boolean true or a numeric record ID, and failure with boolean false or nil. This way you can just test your variable:
<div class="<%= 'ok' if @success %>">
A second form using the ternary ?: operator is useful if you want to choose between tw...
Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...e keys are in fact B-tree type indexes.
A composite index on (email, user_id) is enough, you don't need a separate index on email only - MySQL can use leftmost parts of a composite index. There may be some border cases where the size of an index can slow down your queries, but you should not worry ...
ASP.NET Repeater bind List
...t null values you may want to refactor to this (.NET 6+)
<asp:Repeater ID="repeater" runat="server">
<ItemTemplate>
<%# Container.DataItem?.ToString() ?? string.Empty%>
</ItemTemplate>
</asp:Repeater>
Note if you are using less than .NET 6 you cannot ...
How to see the changes in a Git commit?
...
First get the commit ID using,
git log #to list all
Or
git log -p -1 #last one commit id
Copy commit id.
Now we use two methods to list changes from a specific commit,
Method 1:
git diff commit_id^! #commit id something like this 1c6a6...
EditText, clear focus on touch outside
...eives focus and the on-screen keyboard pops up. When I click somewhere outside of the EditText , it still has the focus (it shouldn't).
I guess I could set up OnTouchListener 's on the other views in layout and manually clear the EditText 's focus. But seems too hackish...
...
Draw in Canvas by finger, Android
... Activity {
DrawingView dv ;
private Paint mPaint;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
dv = new DrawingView(this);
setContentView(dv);
mPaint = new Paint();
mPaint.setAntiAlia...
What do the plus and minus signs mean in Objective-C next to a method?
...lly Apple's code.
@interface NSArray : NSObject {
}
+ (NSArray *)array;
- (id)objectAtIndex:(NSUInteger)index;
@end
// somewhere else:
id myArray = [NSArray array]; // see how the message is sent to NSArray?
id obj = [myArray objectAtIndex:4]; // here the message is sent to myArray
// B...
Team city unmet requirement: MSBuildTools12.0_x86_Path exists
...copied over the files from my x64 machine based on this article so that I didn't need to install vs2012 (though, I did have the change the path to remove x86 on the 32bit machine):
...