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Map function in MATLAB?
...0 8 6 4 2 ]; % the mapping array
c = zeros( 1, 10 ); % your target array
Now, typing
c( b ) = a
returns
c = 0 50 0 40 0 30 0 20 0 10
c( b ) is a reference to a vector of size 5 with the elements of c at the indices given by b. Now if you assing values to this r...
Method has the same erasure as another method in type
... formally equal to my superclass' signature, your method still overrides.
Now, time passes and you decide you are ready to update your class. But you screw up a little, and instead of editing the existing, raw toList() method, you add a new method like this:
class Overrider extends CollectionConve...
Add a reference column migration in Rails 4
...
Now, if you use the special generator syntax for migrations, Rails 4.2 will automatically create the correct migration with foreign key constraints included. rails g migration AddUserToUploads user:references produces add_ref...
Can you “ignore” a file in Perforce?
... with an explanation of how it works. Then I noticed this answer, which is now superfluous I guess.
Assuming you have a client named "CLIENT", a directory named "foo" (located at your project root), and you wish to ignore all .dll files in that directory tree, you can add the following lines to y...
How can I get around MySQL Errcode 13 with SELECT INTO OUTFILE?
... point this out, but there is a reason App Armor doesn't allow this. MySQL now has the ability to modify and read anything in the /data folder. Just don't get hacked now.
– Ryan Ward
Nov 1 '11 at 3:01
...
What's wrong with overridable method calls in constructors?
...s.levels = levels;
this.isAdjustable = isAdjustable;
}
}
And now you can do any of the following:
new Telescope("X/1999");
new Telescope("X/1999", 13);
new Telescope("X/1999", 13, true);
You can't, however, currently set only the name and isAdjustable, and leaving levels at default....
Best way to merge two maps and sum the values of same key?
...
The shortest answer I know of that uses only the standard library is
map1 ++ map2.map{ case (k,v) => k -> (v + map1.getOrElse(k,0)) }
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What is an 'endpoint' in Flask?
...y_hello')
def give_greeting(name):
return 'Hello, {0}!'.format(name)
Now, when Flask routes the request, the logic looks like this:
URL (http://www.example.org/greeting/Mark) should be handled by Endpoint "say_hello".
Endpoint "say_hello" should be handled by View Function "give_greeting"
H...
How to upgrade Git to latest version on macOS?
...on
You should see…
git version <latest version>
Nice! We’re safe now! And next time you can just…
$ brew update && brew upgrade
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Remove Identity from a column in a table
...'MyTable2', 'MyIndex2', etc.
Remove the IDENTITY specification.
You should now have two "identical"-ish tables, one full, the other empty with no IDENTITY.
Run ALTER TABLE [Original] SWITCH TO [Original2]
Now your original table will be empty and the new one will have the data. You have switched th...