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What is the difference between origin and upstream on GitHub?
...your fork: your own repo on GitHub, clone of the original repo of GitHub
From the GitHub page:
When a repo is cloned, it has a default remote called origin that points to your fork on GitHub, not the original repo it was forked from.
To keep track of the original repo, you need to add anothe...
Understanding the difference between __getattr__ and __getattribute__
...g that __getattr__ only gets called if it's defined, as it's not inherited from object
– joel
Sep 1 '19 at 12:45
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In Typescript, How to check if a string is Numeric
... longer available in rxjs v6
I'm solved it by using the isNumeric operator from rxjs library (importing rxjs/util/isNumeric
Update
import { isNumeric } from 'rxjs/util/isNumeric';
.
.
.
var val = "5700";
if (isNumeric(val)){
alert("it is number !");
}
...
How does Stack Overflow generate its SEO-friendly URLs?
... mentioned in Meta Stack Overflow question Non US-ASCII characters dropped from full (profile) URL), and then ignore any characters outside the acceptable ranges. This works most of the time...
... For when it doesn’t I’ve also had to add a lookup table. As mentioned above, some characters don...
How can I get the timezone name in JavaScript?
...ability to detect something like "America/New York." Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset?
...
Why are exclamation marks used in Ruby methods?
...he exclamation point means many things, and sometimes you can't tell a lot from it other than "this is dangerous, be careful".
As others have said, in standard methods it's often used to indicate a method that causes an object to mutate itself, but not always. Note that many standard methods chang...
Merge 2 arrays of objects
...o keep up to date.
The source (arr2) array is where the new data is coming from, and we want it merged into our target array.
We loop over the source array looking for new data, and for every object that is not yet found in our target array we simply add that object using target.push(sourceElement)
...
Ball to Ball Collision - Detection and Handling
...e collision components by creating a unit vector pointing in the direction from one ball to the other, then taking the dot product with the velocity vectors of the balls. You can then plug these components into a 1D perfectly elastic collision equation.
Wikipedia has a pretty good summary of the w...
git push says “everything up-to-date” even though I have local changes
...d asked you to create a temporary branch using the -b option, but starting from version 1.5.0, the above command detaches your HEAD from the current branch and directly points at the commit named by the tag (v2.6.18 in the example above).
You can use all git commands while in this state.
You ...
Is Java “pass-by-reference” or “pass-by-value”?
... a new object of type Foo with an attribute "f".
Foo f = new Foo("f");
From the method side, a reference of type Foo with a name a is declared and it's initially assigned null.
public static void changeReference(Foo a)
As you call the method changeReference, the reference a will be assigned ...