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Why is there “data” and “newtype” in Haskell? [duplicate]
...type N = N Int
Then N undefined is equivalent to undefined and causes an error when evaluated. But D undefined is not equivalent to undefined, and it can be evaluated as long as you don't try to peek inside.
Couldn't the compiler handle this for itself.
No, not really—this is a case where...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
..._init__(self):
CrawlSpider.__init__(self)
self.verificationErrors = []
self.selenium = selenium("localhost", 4444, "*chrome", "http://www.domain.com")
self.selenium.start()
def __del__(self):
self.selenium.stop()
print self.verificationErrors
...
How to build an android library with Android Studio and gradle?
... missing the root project build.gradle. I wil update the question with the error I am getting now.
– respectTheCode
May 23 '13 at 18:32
1
...
Data Modeling with Kafka? Topics and Partitions
...underlying operating system. E.g. in our production system, we once saw an error saying too many files are open, while we had around 3600 topic partitions.
When a broker is shut down uncleanly (e.g., kill -9), the observed unavailability could be proportional to the number of partitions.
The end-to-...
CSS triangle custom border color
...sible and invalid characters into my CSS file that caused validation/parse errors in that css file. Once I removed the invisible characters (the chars were zero width, so cursor wasn't showing them, but I was able to backspace) it worked wonderfully. It was not your code that was the problem, I thi...
When to use symbols instead of strings in Ruby?
...
@andrewcockerham Your provided link is not working (Error-404). You have to remove last / (after strings ) from the link. Here it is: www.reactive.io/tips/2009/01/11/the-difference-between-ruby-symbols-and-strings
– Atul Khanduri
Oc...
mongodb group values by multiple fields
...));
log({ topaddr });
client.close();
} catch(e) {
console.error(e)
} finally {
process.exit()
}
})()
books.json
{ "addr": "address1", "book": "book1" }
{ "addr": "address2", "book": "book1" }
{ "addr": "address1", "book": "book5" }
{ "addr": "address3", "book": "boo...
Is there a way to cache GitHub credentials for pushing commits?
...trc does not work outside of a git repository. It fails with the following error:
fatal: Not a git repository: . at /usr/share/perl5/Git.pm line 214.
There is no real reason why need to be within a repository, though. Credential helpers should be able to work just fine outside the repository ...
Valid values for android:fontFamily and what they map to?
...and
<my.package.views.Museo900TextView
android:id="@+id/dialog_error_text_header"
android:layout_width="190dp"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="12sp" />
...
Difference between classification and clustering in data mining? [closed]
...equations, where the feeling of doing something wrong is represented by an error or cost. This process of identifying what not to do with a saber is called Classification .
Clustering and Classification are the absolute basics of machine learning. Let’s look at the difference between them.
Kyl...