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A monad is just a monoid in the category of endofunctors, what's the problem?
...gt; Anything including Anything else. As my imagination jumps to Int -> String, it also includes Integer -> Maybe Int, or even Maybe Double -> Either String Int where a :: Maybe Double; b :: Either String Int.
So the statement comes together as follows:
functor scope :: f a -> g b ...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...end
2) Loop over vector
for test = [1, 3, 4]
test
end
3) Loop over string
for test = 'hello'
test
end
4) Loop over a one-dimensional cell array
for test = {'hello', 42, datestr(now) ,1:3}
test
end
5) Loop over a two-dimensional cell array
for test = {'hello',42,datestr(now) ; 'w...
How to execute a MySQL command from a shell script?
...
best to avoid -p if the password is null or empty string, perhaps you can update your post? :)
– James Oravec
Jan 6 '15 at 23:44
...
Python Requests - No connection adapters
...ise:
url = '''
http://google.com
'''
because there are '\n' hide in the string. The url in fact become:
\nhttp://google.com\n
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Convert floats to ints in Pandas?
...ll edit all the floats, so it may be better to convert your FK column to a string, do the manipulation, and then save.
– Ryan G
Jan 22 '14 at 19:30
...
Converting array to list in Java
...have a truly immutable list in Java 9 and 10.
Truly Immutable list
Java 9:
String[] objects = {"Apple", "Ball", "Cat"};
List<String> objectList = List.of(objects);
Java 10 (Truly Immutable list):
We can use List.of introduced in Java 9. Also other ways:
List.copyOf(Arrays.asList(integers))
A...
How do I compile and run a program in Java on my Mac?
...our home directory.
public class HelloWorld {
public static void main(String args[]) {
System.out.println("Hello World!");
}
}
For example, if your username is David, save it as "/Users/David/HelloWorld.java". This simple program declares a single class called HelloWorld, with a s...
numpy: most efficient frequency counts for unique values in an array
...
take note that if the array is full of strings, both elements in each of the items returned are strings too.
– user1269942
Jun 23 '15 at 4:48
...
How can one check to see if a remote file exists using PHP?
...
Some sites block access if you don't provide a user agent string, so I suggest following this guide to add CURLOPT_USERAGENT in addition to CURLOPT_NOBODY: davidwalsh.name/set-user-agent-php-curl-spoof
– rlorenzo
Aug 17 '12 at 22:30
...
How to convert an NSTimeInterval (seconds) into minutes
...to convert a given NSTimeInterval from its value in seconds to a localized string to show the user. For example:
Objective-C
NSTimeInterval interval = 326.4;
NSDateComponentsFormatter *componentFormatter = [[NSDateComponentsFormatter alloc] init];
componentFormatter.unitsStyle = NSDateComponents...