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In Scala how do I remove duplicates from a list?
...f (v != prev) result += v
prev = v
}
result //.toList
}
}
Test:
import scala.util.Random
class ListUtilTest extends UnitSpec {
"distinctOnSorted" should "return only the distinct elements in a sorted list" in {
val bigList = List.fill(1e7.toInt)(Random.nextInt(100)).sorted
...
Root user/sudo equivalent in Cygwin?
...mmand on the Cygwin CLI, or add it to ~/.bashrc:
$ PATH=$HOME/bin:$PATH
Tested on 64-bit Windows 8.
You could also instead of above steps add an alias for this command to ~/.bashrc:
# alias to simulate sudo
alias sudo='cygstart --action=runas'
...
How to define a reply-to address?
...do
config.action_mailer.default_options = {
reply_to: 'test@example.com'
}
end
The reference:
https://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration
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How to use java.net.URLConnection to fire and handle HTTP requests?
...the parameters will be available by HttpServletRequest#getParameter().
For testing purposes, you can print the response body to stdout as below:
try (Scanner scanner = new Scanner(response)) {
String responseBody = scanner.useDelimiter("\\A").next();
System.out.println(responseBody);
}
Fir...
PostgreSQL array_agg order
...ally work, however. For example:
SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
So in your case you would write:
SELECT
array_to_string(array_agg(animal_name),';') animal_names,
array_to_string(array_agg(animal_type),';') animal_types
FROM (SELECT animal_name, animal_type...
Replace part of a string with another string
...os, search.length(), replace);
pos += replace.length();
}
}
Tests:
std::string input = "abc abc def";
std::cout << "Input string: " << input << std::endl;
std::cout << "ReplaceString() return value: "
<< ReplaceString(input, "bc", "!!") <&...
Does anyone beside me just NOT get ASP.NET MVC? [closed]
...nvolves the development of a set of supporting classes in a separate (unit-testable) DLL. These class(es) will handle business logic, data access and architectural/routing decisions.
MVC
MVC takes a more "architectural" view of web application development: offering a standardized scaffold upon wh...
How to create a zip archive of a directory in Python?
...hive the files in the parent dirs up to the root_dir.
I did have an issue testing this on Cygwin with 2.7 - it wants a root_dir argument, for cwd:
make_archive('zipfile_name', 'zip', root_dir='.')
Using Python from the shell
You can do this with Python from the shell also using the zipfile mo...
MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
...last time, so I'm afraid I can't try this right now. I'll have to set up a test database later. But I don't understand why this should affect the query. The HAVING statement should only apply to the query which it's within, shouldn't it? I really don't understand why the "real" query should affect t...
What is the meaning of the term “free function” in C++?
While reading the documentation for boost::test, I came across the term "free function". What I understand is that a free function is any function that doesn't return anything (Its return type is void). But after reading further it seems that free functions also don't take any arguments. But I am no...