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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...t;- cond
when b $ foo >> while cond foo
And here, a dumb test to see if it works.
main = do
a <- (newListArray (0,9) [10,9..1]) :: IO (IOUArray Int Int)
printArr a
putStrLn "Sorting..."
qsort a 0 9
putStrLn "Sorted."
printArr a
where printArr a = mapM_...
How to change variables value while debugging with LLDB in Xcode?
....
If you want to set some variable (for example a "dict") to nil and then test the code flow, you can try the following.
Put the breakpoint properly after initialised to the desired value.
then execute "expression dict = nil" in lldb command line to change it. (for example "nil")
Step over the...
Conda: Installing / upgrading directly from github
...nstalled package only on the master branch after that? What if I'd like to test my PR from a branch before merging to master?
– Mymozaaa
May 9 '19 at 16:10
1
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How to pass a function as a parameter in Java? [duplicate]
...parated list of formal parameters enclosed in parentheses. The CheckPerson.test method contains one parameter, p,
which represents an instance of the Person class.Note: You
can omit the data type of the parameters in a lambda expression. In
addition, you can omit the parentheses if there is on...
Select n random rows from SQL Server table
...s not even retrieve data that it will not return.
On a very large table I tested
select top 1 percent * from [tablename] order by newid()
took more than 20 minutes.
select * from [tablename] tablesample(1 percent)
took 2 minutes.
Performance will also improve on smaller samples in TABLESAMP...
Why can I not push_back a unique_ptr into a vector?
...unique_ptr into vector? It's extremely slow compared with raw pointer as I tested.
– user2189731
Apr 9 at 7:35
add a comment
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How can I get a list of build targets in Ant?
...you ask yourself ... I was creating a standalone ant env which I'd like to test within Eclipse ... of course I've got my Ant View there)
– Andreas Dietrich
Jul 23 '14 at 12:23
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What Product Flavor does Android Studio build by default in build.gradle?
...ecified alphabetically. Is there a way to tell Android Studio to build and test only a specific product flavor during development?
...
How to deal with persistent storage (e.g. databases) in Docker
...: "/mnt/sda1/var/lib/docker/volumes/mypthonapp_db-data/_data"
}
]
Some testing:
# Start the containers
docker-compose up -d
# .. input some data into the database
docker-compose run --rm web python manage.py migrate
docker-compose run --rm web python manage.py createsuperuser
...
# Stop and r...
How can I make a JPA OneToOne relation lazy
...
Maybe there is another option, but I have not personally tested it: on non constrained side, use a one-to-one with a formula like select other_entity.id from other_entity where id = other_entity.id. Of course, this is not ideal for query performances.
– Fréd...