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What are the benefits of dependency injection containers?
...hing that you do have control over the environment it will be run on, over time it is better to give someone else the capabilities to change the configuration:
When developing you don't know when it will change (the app is so useful your company sells it to someone else).
I don't want to be stuck ...
Difference between rake db:migrate db:reset and db:schema:load
...file. This is useful for a fresh install of app as it doesn't take as much time as db:migrate
Important note, db:schema:load will delete data on server.
rake db:migrate makes changes to the existing schema. Its like creating versions of schema. db:migrate will look in db/migrate/ for any ruby file...
Remove all classes that begin with a certain string
...be a simple regex that would break on non-space word boundaries. If I have time tomorrow I'll supply a unit test that proves this.
– gerges
Jun 14 '12 at 5:10
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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?
..., VS10, VS11 Beta and VS2012RC have all upgraded the .csproj and .sln over time.
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Differences between unique_ptr and shared_ptr [duplicate]
... resource, any attempt to make a copy of a unique_ptr will cause a compile-time error. For example, this code is illegal:
unique_ptr<T> myPtr(new T); // Okay
unique_ptr<T> myOtherPtr = myPtr; // Error: Can't copy unique_ptr
However, unique_ptr can be moved using the new move se...
what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
...ose keys you cannot manipulate/convert for whatever reason, like a project time constraint).
E.g.:
h = {
:youtube => {
:search => 'daffy', # nested symbol key
'history' => ['goofy', 'mickey'] # nested string key
...
In Python, using argparse, allow only positive integers
...st of integers from 1 to 999 inclusive being written to your console every time you use --help or if an invalid argument is provided. Not a good choice in most circumstances.
– biomiker
Apr 29 '16 at 16:21
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When to use os.name, sys.platform, or platform.system?
...ce code.
The output of sys.platform and os.name are determined at compile time. platform.system() determines the system type at run time.
sys.platform is specified as a compiler define during the build configuration.
os.name checks whether certain os specific modules are available (e.g. posix, nt...
Why are primes important in cryptography?
... depend on the fact that prime factorization of large numbers takes a long time. Basically you have a "public key" consisting of a product of two large primes used to encrypt a message, and a "secret key" consisting of those two primes used to decrypt the message. You can make the public key public,...
define() vs. const
...fference between those two ways is that const defines constants at compile time, whereas define defines them at run time. This causes most of const's disadvantages. Some disadvantages of const are:
const cannot be used to conditionally define constants. To define a global constant, it has to be us...