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Failed to Attach to Process ID Xcode
...xperienced this problem?
Yesterday I still can run my app in simulator but now I cannot run my app since Xcode prints this error in console:
...
Remove empty elements from an array in Javascript
... when there were not many useful built-in methods in the Array.prototype.
Now, certainly, I would recommend you to use the filter method.
Take in mind that this method will return you a new array with the elements that pass the criteria of the callback function you provide to it.
For example, if ...
How to access component methods from “outside” in ReactJS?
...t;
</div>
);
}
}
Note: This will only work if the child component is declared as a class, as per documentation found here: https://facebook.github.io/react/docs/refs-and-the-dom.html#adding-a-ref-to-a-class-component
Update 2019-04-01: Changed example to use a class ...
getting the screen density programmatically in android?
...g point scaling factor from the reference density (160dpi). The same value now provided by metrics.densityDpi can be calculated
int densityDpi = (int)(metrics.density * 160f);
share
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improve this...
ASP.NET MVC: No parameterless constructor defined for this object
... only have this problem (no parameterless bla bla...) during serialization if I define a constructor, and not a parameterless contructor. I mean, in this example, if you delete the constructor you defined ( public MyModel(IHelper helper) {} ) the problem disappears... so everytime you create a const...
Converting string from snake_case to CamelCase in Ruby
...
If you're using Rails, String#camelize is what you're looking for.
"active_record".camelize # => "ActiveRecord"
"active_record".camelize(:lower) # => "activeRecord"
If you want to get an act...
Selecting a row of pandas series/dataframe by integer index
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What if you wanted the 2nd AND 3rd AND 4th row?
– FaCoffee
Nov 7 '16 at 20:36
1
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Best way to select random rows PostgreSQL
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Given your specifications (plus additional info in the comments),
You have a numeric ID column (integer numbers) with only few (or moderately few) gaps.
Obviously no or few write operations.
Your ID column has to be indexed! A primary key...
How to redirect to a 404 in Rails?
...self, there's no reason to; Rails has this functionality built in already. If you want to show a 404 page, create a render_404 method (or not_found as I called it) in ApplicationController like this:
def not_found
raise ActionController::RoutingError.new('Not Found')
end
Rails also handles Abs...
ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
...Changed;
}
public void ContentCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
//This will get called when the collection is changed
}
}
Okay, that's twice today I've been bitten by the MSDN documentation being wrong. In the link I gave you it says:...