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What is the fastest way to get the value of π?
... fastest π I know of is the one with the digits hard coded. Looking at Pi and Pi[PDF], there are a lot of formulae.
Here is a method that converges quickly — about 14 digits per iteration. PiFast, the current fastest application, uses this formula with the FFT. I'll just write the formula, since...
How to reset postgres' primary key sequence when it falls out of sync?
...
-- Login to psql and run the following
-- What is the result?
SELECT MAX(id) FROM your_table;
-- Then run...
-- This should be higher than the last result.
SELECT nextval('your_table_id_seq');
-- If it's not higher... run this set the sequ...
AngularJS toggle class using ng-class
... @Stewie Faaakin gorgeous mate, love how it looks like real code and not some bastardized expression markup :D
– mattdlockyer
Jan 21 '14 at 17:33
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When should you use constexpr capability in C++11?
...hat can be evaluated down to a constant while maintaining good readability and allowing slightly more complex processing than just setting a constant to a number.
It basically provides a good aid to maintainability as it becomes more obvious what you are doing. Take max( a, b ) for example:
templat...
What are “decorators” and how are they used?
...on online for decorators save for a blurb in the AngularJS documentation and a brief (albeit interesting) mention in a youtube video .
...
How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
How to secure RESTful web services?
... so they know the client is who they say they are. Clients generate certs and give them to you over a secure channel (like coming into your office with a USB key - preferably a non-trojaned USB key).
You load the public key of the cert client certificates (and their signer's certificate(s), if nec...
How to map a composite key with JPA and Hibernate?
...y the specification also applies. So here they are:
2.1.4 Primary Keys and Entity Identity
...
A composite primary key must
correspond to either a single
persistent field or property or to a
set of such fields or properties as
described below. A primary key class
must be defi...
Webview load html from assets directory
...= (WebView) findViewById(R.id.webView1);
wv.loadUrl("file:///android_asset/aboutcertified.html"); // now it will not fail here
}
}
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Rails: How to get the model class name based on the controller class name?
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If your controller and model are in the same namespace, then what you want is
controller_path.classify
controller_path gives you the namespace; controller_name doesn't.
For example, if your controller is
Admin::RolesController
then:
con...