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Delete element in a slice
...ricks for slice, including delete an element from slice.
Link: enter link description here
For example a is the slice which you want to delete the number i element.
a = append(a[:i], a[i+1:]...)
OR
a = a[:i+copy(a[i:], a[i+1:])]
...
Difference between a Structure and a Union
... print_float(0.15625);
return 0;
}
Take a look at single precision description on wikipedia. I used the example and the magic number 0.15625 from there.
union can also be used to implement an algebraic data type that has multiple alternatives. I found an example of that in the "Real World...
What's the meaning of interface{}?
...refer to the article "How to use interfaces in Go" (based on "Russ Cox’s description of interfaces"):
What is an interface?
An interface is two things:
it is a set of methods,
but it is also a type
The interface{} type, the empty interface is the interface that has n...
Interfaces with static fields in java for sharing 'constants'
...or, see http://scg.unibe.ch/archive/papers/Scha03aTraits.pdf. For a short description of how traits in Scala compare with interfaces in Java, see http://www.codecommit.com/blog/scala/scala-for-java-refugees-part-5. In the context of teaching OO design, simplistic rules like asserting that interfac...
Error - trustAnchors parameter must be non-empty
...
This description is factually incorrect, and only fixes the problem in the same sense as reinstalling Windows might fix an issue. There is no need to remove all Java packages. If you want to go this way, you only need to install t...
Rotating a point about another point (2D)
... pivot point to the new coordinates (x' + a, y' + b).
Following the above description:
a 2D clockwise theta degrees rotation of point (x, y) around point (a, b) is:
Using your function prototype: (x, y) -> (p.x, p.y); (a, b) -> (cx, cy); theta -> angle:
POINT rotate_point(float cx, floa...
Can I create more than one repository for github pages?
...you can change the publishing source in the repository settings.
A better description is available in the GitHub Pages documentation, including options for using custom domain names.
(since April 2013, all username.github.com are now username.github.io)
...
Cost of len() function
...the length is small (O(1) in big-O notation) and mostly consists of [rough description, written in Python terms, not C terms]: look up "len" in a dictionary and dispatch it to the built_in len function which will look up the object's __len__ method and call that ... all it has to do is return self.l...
How can I find the location of origin/master in git, and how do I change it?
...
Note that this description is incomplete. I currently am experiencing # On branch master # Your branch is ahead of 'origin/master' by 3 commits. But git diff origin/master shows nothing, (and the --cached option does not change this). ...
What is the fastest way to get the value of π?
...
Here's a general description of a technique for calculating pi that I learnt in high school.
I only share this because I think it is simple enough that anyone can remember it, indefinitely, plus it teaches you the concept of "Monte-Carlo" me...