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How do I select the “last child” with a specific class name in CSS? [duplicate]
...iple classes to an element like so:
<ul>
<li class="list">test1</li>
<li class="list">test2</li>
<li class="list last">test3</li>
<li>test4</li>
</ul>
The last element has the list class like its siblings but also has the...
Circle line-segment collision detection algorithm?
...e ray,
L is the end point of the ray,
C is the center of sphere you're testing against
r is the radius of that sphere
Compute:
d = L - E ( Direction vector of ray, from start to end )
f = E - C ( Vector from center sphere to ray start )
Then the intersection is found by..
Plugging:
P = E ...
What are all the uses of an underscore in Scala?
...ses of the underscore is Scala _ [underscore] magic.
Examples:
def matchTest(x: Int): String = x match {
case 1 => "one"
case 2 => "two"
case _ => "anything other than one and two"
}
expr match {
case List(1,_,_) => " a list with three element and the first elem...
Remove not alphanumeric characters from string
....g.:
input.replace(/[^0-9a-z]/gi, '')
The input is malformed
Since the test string contains various escaped chars, which are not alphanumeric, it will remove them.
A backslash in the string needs escaping if it's to be taken literally:
"\\test\\red\\bob\\fred\\new".replace(/\W/g, '')
"testredb...
How to execute a Ruby script in Terminal?
...call ruby your_program.rb, I get this: ruby: No such file or directory -- testapp.rb (LoadError)
– Tom Maxwell
Jan 4 '12 at 2:53
1
...
How to overwrite existing files in batch?
...
xcopy /s/Y c:\mmyinbox\test.doc C:\myoutbox (Y is a CAPITAL.)
– Halfacht
Jan 16 '18 at 13:08
add a comment
...
How to properly reuse connection to Mongodb across NodeJs application and modules
...useNewUrlParser: true }, function( err, client ) {
_db = client.db('test_db');
return callback( err );
} );
},
getDb: function() {
return _db;
}
};
To use it, you would do this in your app.js:
var mongoUtil = require( 'mongoUtil' );
mongoUtil.connectToServer( function...
Pass parameter to fabric task
...
Fabric 2 task arguments documentation:
http://docs.pyinvoke.org/en/latest/concepts/invoking-tasks.html#task-command-line-arguments
Fabric 1.X uses the following syntax for passing arguments to tasks:
fab task:'hello world'
fab task:something='hello'
fab task:foo=99,bar=True
fab task:fo...
Check if a given key already exists in a dictionary
I wanted to test if a key exists in a dictionary before updating the value for the key.
I wrote the following code:
16 Answ...
Python: How do I make a subclass from a superclass?
... the direction specified by the reverse keyword argument, as the following tests illustrate:
import pytest
def test_1():
assert SortedList([5, 2, 3]) == [2, 3, 5]
def test_2():
SortedList([5, 2, 3], reverse=True) == [5, 3, 2]
def test_3():
with pytest.raises(TypeError):
sorte...