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Any reason why scala does not explicitly support dependent types?
...n the positive: it's clear that here we have types which are distinguished by the values which are their prefixes.
However, it's often objected that Scala isn't a "fully" dependently type language because it doesn't have dependent sum and product types as found in Agda or Coq or Idris as intrinsics...
JetBrains / IntelliJ keyboard shortcut to collapse all methods
...de > Folding > Expand all to level > 1
I managed to achieve this by using the menu option Code > Folding > Expand all to level > 1.
I re-assigned it to Ctrl+NumPad-1 which gives me a quick way to collapse my classes down to their methods.
This works at the 'block level' of the ...
Laravel Check If Related Model Exists
...no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
// exists
}
This will work for every relation since dynamic p...
Difference between abstract class and interface in Python
...Creating an Abstract Base Class
We can create our own Abstract Base Class by setting the metaclass to abc.ABCMeta and using the abc.abstractmethod decorator on relevant methods. The metaclass will be add the decorated functions to the __abstractmethods__ attribute, preventing instantiation until th...
What is the correct value for the disabled attribute?
... markup.
For HTML5, <input type="text" disabled /> is valid and used by W3C on their samples.
In fact, both ways works on all major browsers.
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How do I set the rounded corner radius of a color drawable using xml?
...ember to add padding for the start and end so the text doesn't get crowded by the rounded edge
– RowanPD
Jun 4 '17 at 15:49
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What does the filter parameter to createScaledBitmap do?
...
A quick dig through the SKIA source-code indicates that (at least by default) the FILTER flag causes it to do a straightforward bilinear interpolation. Check Wikipedia or your favorite graphics reference to see what the expected consequences are. Traditionally, you want to do bilinear or ...
How to inherit constructors?
... Invisible base class constructors are a result of choices made by designers of C# language (and quite possibly other CLR languages). That being sad it has nothing to do with upfront design of application but with limitations of language which renders design with many constructors in bas...
Python serialization - Why pickle?
...tle. Then that information stored in the class might be altered at runtime by the user.
You could have another group of tables in the database and write another function to go through everything stored and write it to the new database tables. Then you would need to write another function to be able...
Which characters need to be escaped in HTML?
...se. Don't do this unless you have a design constraint that requires it.
1 By "a location where text content is expected", I mean inside of an element or quoted attribute value where normal parsing rules apply. For example: <p>HERE</p> or <p title="HERE">...</p>. What I wrote...