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What are type lambdas in Scala and what are their benefits?
... point[A](a: A): M[A]
def bind[A, B](m: M[A])(f: A => M[B]): M[B]
}
Now, Either is a type constructor of two arguments, but to implement Monad, you need to give it a type constructor of one argument. The solution to this is to use a type lambda:
class EitherMonad[A] extends Monad[({type λ[...
Service Temporarily Unavailable Magento?
...
Now in new version magento2 on Generate error Service Temporarily Unavailable.
Remove maintenance.flag
From this path which is changed magento2/var/maintenance.flag.
Also
$ rm maintenance.flag
...
Difference between Mock / Stub / Spy in Spock test framework
...nd/or results or blocking the original methods from being called at all.
Now here is an executable example test, demonstrating what is possible and what is not. It is a bit more instructive than mikhail's snippets. Many thanks to him for inspiring me to improve my own answer! :-)
package de.scrum...
What is the “FS”/“GS” register intended for?
So I know what the following registers and their uses are supposed to be:
5 Answers
5
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
...d my own explanation for how the commit ranges work with git diff, but for now, you might want to check out What are the differences between double-dot ".." and triple-dot "..." in Git diff commit ranges?.
See Also
Pro Git § 6.1 Git Tools - Revision Selection - Commit Ranges
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Is there a command to list all Unix group names? [closed]
I know there is the /etc/group file that lists all users groups.
3 Answers
3
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Remove the last character in a string in T-SQL?
... substring syntax is as follows: SUBSTRING ( expression ,start , length ). Now, both queries return the same because the numbering is 1 based, meaning that the first character in the expression is 1. If start is less than 1, the returned expression will begin at the first character that is specified...
Efficient string concatenation in C++
...ly will have much better efficiency simply by using operator += instead.
Now after that disclaimer, I will answer your actual question...
The efficiency of the STL string class depends on the implementation of STL you are using.
You could guarantee efficiency and have greater control yourself by...
Domain Driven Design: Domain Service, Application Service
...is not the domain's concern and is therefore defined by an interface.
For now, we'll focus on the IExchangeRateService. The business logic for this service is implemented by an external web service. However, its concept is still part of the domain and is represented by this interface.
Infrastructu...
Is there a way to create multiline comments in Python?
...iting features can be a painful experience. Finding the right editor (and knowing how to use it) can make a big difference in how the Python programming experience is perceived.
Not only should the text editor be able to comment-out selected regions, it should also be able to shift blocks of code t...