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Is floating point math broken?
...ary floating point math is like this. In most programming languages, it is based on the IEEE 754 standard. The crux of the problem is that numbers are represented in this format as a whole number times a power of two; rational numbers (such as 0.1, which is 1/10) whose denominator is not a power of ...
Why should I use a pointer rather than the object itself?
...ymorphic types, pointers (or references) are used to avoid slicing:
class Base { ... };
class Derived : public Base { ... };
void fun(Base b) { ... }
void gun(Base* b) { ... }
void hun(Base& b) { ... }
Derived d;
fun(d); // oops, all Derived parts silently "sliced" off
gun(&d); // OK...
Rails CSRF Protection + Angular.js: protect_from_forgery makes me to log out on POST
...rify that the cookie matches
X-XSRF-TOKEN HTTP header
Here is my solution based on those instructions:
First, set the cookie:
# app/controllers/application_controller.rb
# Turn on request forgery protection
protect_from_forgery
after_action :set_csrf_cookie
def set_csrf_cookie
cookies['XSRF-TO...
Programmatically obtain the Android API level of a device?
...uild.VERSION_CODES Human Version Name
1 BASE Android 1.0 (no codename)
2 BASE_1_1 Android 1.1 Petit Four
3 CUPCAKE Android 1.5 Cupcake
4 DONUT ...
Why is a 3-way merge advantageous over a 2-way merge?
... The essential logic of a three-way merge tool is simple:
Compare base, source, and target files
Identify the "chunks" in the source and target files file:
Chunks that don't match the base
Chunks that do match the base
Then, put together a merged result consisting of:
...
Type erasure techniques
...
so, if the shared_ptr then stores a Derived *, but the Base * did not declare the destructor as virtual, shared_ptr<void> still works as intended, since it never even knew about a base class to begin with. Cool!
– TamaMcGlinn
May 30 '1...
How to change the ROOT application?
...t from the bin directory (sh startup.sh).
Leave your war file in $CATALINA_BASE/webapps under its original name. Turn off
autoDeploy and deployOnStartup in your Host element in the server.xml file.
Explicitly define all application Contexts in server.xml, specifying both the path
and docBase attri...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
...ystems use different programs. apt and its derivatives are used on Debian based linux systems. Red Hat-ish Linux systems use rpm (or at least they did many, many, years ago). yum is also a package manager for RedHat based systems.
Alpine based systems use apk.
Warning
As of 25 April 2016, homebrew...
Print an integer in binary format in Java
...ng uses two's complement output, toString coverts the number the specified base and puts a negative sign in front, so toString(-8, 2) == "-1000"
– Joe
Jan 10 '16 at 20:22
add ...
How to convert from System.Enum to base integer?
... Also, using an extension method can add consistency to your code base. Since, as @nawfal pointed, out there are several ways that you can get the int value from an enum, creating an extension method and enforcing its use means that your every time you get the int value of an enum you are ...