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How do I determine the size of my array in C?
...;
size_t n = sizeof(a) / sizeof(a[0]);
Another advantage is that you can now easily parameterize
the array name in a macro and get:
#define NELEMS(x) (sizeof(x) / sizeof((x)[0]))
int a[17];
size_t n = NELEMS(a);
share
...
Algorithm to detect intersection of two rectangles?
...nt.x - v(n-1).x) +
rotated.y * (testpoint.y - v(n-1).y);
Now test all points of rectangle A against the edges of rectangle B and vice versa. If you find a separating edge the objects don't intersect (providing all other points in B are on the other side of the edge being tested for...
Do login forms need tokens against CSRF attacks?
...e they may not notice they are logged in via the host account
The attacker now has access to any data or metadata the victim "created" (intentionally or unintentionally) while their browser was logged in with the host account
As a pertinent example, consider YouTube. YouTube allowed users to see a...
Homebrew install specific version of formula?
...Library/Formula/postgresql.rb
$ brew install postgresql
# … installing
Now that the older postgresql version is installed, we can re-install the latest formula in order to keep our repository clean:
$ git checkout -- Library/Formula/postgresql.rb
brew switch is your friend to change between t...
Custom numeric format string to always display the sign
...
Thank you, Kamil - I missed that. I have now corrected the force sign format: +#;-#;+0 (instead of +#;-#)
– Edward
Aug 25 '15 at 14:16
...
How to delay the .keyup() handler until the user stops typing?
I’ve got a search field. Right now it searches for every keyup. So if someone types “Windows”, it will make a search with AJAX for every keyup: “W”, “Wi”, “Win”, “Wind”, “Windo”, “Window”, “Windows”.
...
How to properly document S4 class slots using Roxygen2?
... answer for Roxygen2 5.0.1, current as of 6.0.1
For S4, the best practice now is documenting using the @slot tag:
#' The title for my S4 class that extends \code{"character"} class.
#'
#' Some details about this class and my plans for it in the body.
#'
#' @slot myslot1 A logical keeping track of ...
How to deal with IntelliJ IDEA project files under Git source control constantly changing?
... checking out for the first time, but it does seem the best compromise for now. We also had to have the TeamCity inspections work off of the Maven file and an exported inspections profile, but we got that working too. Thank you!
– user65839
Aug 20 '11 at 0:20
...
Checkout remote branch using git svn
I have checked out a svn repository using git svn. Now I need to checkout one of the branches and track it. Which is the best way to do it?
...
What is WCF RIA services?
...lled CustomerContext that has a method GetCustomersByCountryQuery. You can now use this method on the client as if you were calling it on the server.
Updates, inserts and deletes follow a different pattern. When you create a domain service, you can indicate whether you want to enable editing. The c...