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Javascript reduce on array of objects
...educe((a, b) => ({x: a.x + b.x}));
// -> {x: 7}
Explanation added from comments:
The return value of each iteration of [].reduce used as the a variable in the next iteration.
Iteration 1: a = {x:1}, b = {x:2}, {x: 3} assigned to a in Iteration 2
Iteration 2: a = {x:3}, b = {x:4}.
The ...
Binary search (bisection) in Python
...
from bisect import bisect_left
def binary_search(a, x, lo=0, hi=None): # can't use a to specify default for hi
hi = hi if hi is not None else len(a) # hi defaults to len(a)
pos = bisect_left(a, x, lo, hi) # fin...
How can I change the color of pagination dots of UIPageControl?
...stered then the view will not react to touch input.
It's completely fresh from the oven, but seems to work. Let me know if you run into any problems with it.
Future improvements:
Resize the dots to fit the current
bounds if there are too many.
Don't redraw the entire view in drawRect:
Examp...
What is the difference between build.sbt and build.scala?
... project settings. But now I have installed giter8 and created a project from template. And generated project from template missed build.sbt file, but it have build.scala (which seems used for same purposes, but it is more flexible).
...
How do I update Node.js?
...d nvm-setup.zip extract and install it.
execute command nvm list available from cmd or gitbash or powershell, this will list all available version of node
use command nvm install version e.g. nvm install 12.14.0 to install on the machine
last once installed use nvm use version to use newer versio...
_=> what does this underscore mean in Lambda expressions?
...n in Haskell and other functional languages. I think that's where it comes from.
– Gabe Moothart
May 6 '10 at 4:34
10
...
jQuery - Illegal invocation
...nally within jQuery that isn't encoding/serializing correctly the To & From Objects.
Try:
var data = {
from : from.val(),
to : to.val(),
speed : speed
};
Notice also on the lines:
$(from).css(...
$(to).css(
You don't need the jQuery wrapper as To & From are already jQuery ...
PHPDoc type hinting for array of objects?
...r Test[] */
private $items;
}
for class properties.
Previous answer from '09 when PHPDoc (and IDEs like Zend Studio and Netbeans) didn't have that option:
The best you can do is say,
foreach ($Objs as $Obj)
{
/* @var $Obj Test */
// You should be able to get hinting after the preced...
How do I draw a grid onto a plot in Python?
... python
#-*- coding: utf-8 -*-
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from matplotlib.figure import Figure
from matplotlib.backends.backend_gtk3agg import FigureCanvasGTK3Agg as FigureCanvas
win = Gtk.Window()
win.connect("delete-event", Gtk.main_quit)
win.set_tit...
How do I call an Angular.js filter with multiple arguments?
As from the documentation , we can call a filter such as date like this:
6 Answers
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