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What's the difference between hard and soft floating point numbers?
...s in integer registers. You can still compile your code with a -mfpu=vfp, etc but you should use -mfloat-abi=softfp so that if the libc needs a float it is passed in a way the library understands.
The Linux kernel can support emulation of the VFP instructions. Obviously, you are better off to com...
Inheritance and Overriding __init__ in python
...wing:
We can directly subclass built-in classes, like dict, list, tuple, etc.
The super function handles tracking down this class's superclasses and calling functions in them appropriately.
share
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Purpose of Django setting ‘SECRET_KEY’
...ents).
Unique tokens for a user session, password reset request, messages, etc.
Prevention of cross-site or replay attacks by adding (and then expecting) unique values for the request.
Generating a unique salt for hash functions.
So, the general answer is: There are many things in a Django app whi...
Android: upgrading DB version and adding new table
... //alter existing tables(add column, add/remove constraint)
//etc.
}
}
Using Migration classes
onCreate: Since onCreate will be called when application freshly installed, we also need to execute all migrations(database version updates). So onCreate will looks like this:
pu...
In Python, when should I use a function instead of a method?
...bject like a person.
Attributes are the person's name, height, shoe size, etc.
Methods and functions are operations that the person can perform.
If the operation could be done by just any ol' person, without requiring anything unique to this one specific person (and without changing anything on t...
Downloading all maven dependencies to a directory NOT in repository?
... @ses A standard maven build (e.g. compile, test, package, install, etc.; not sure about validate) already copies all dependencies to your local repo by default. This is not for that. Instead it's for situations where you need your app's dependencies for whatever reason. I'm using it right no...
Create RegExps on the fly using string variables
...ng but string_to_replace
What does that mean, you want to replace all stretches of text not taking part in a match against the string? A replacement with ^ certainly doesn't this, because ^ means a start-of-string token, not a negation. ^ is only a negation in [] character groups. There are also n...
How do I write good/correct package __init__.py files
...-- if "importing the package" means getting all sort of classes, functions etc defined directly as part of the package, then I would lexically copy the contents of blah.py into the package's __init__.py instead and remove blah.py (the multiplication of source files does no good here).
If you do ins...
Push Notifications in Android Platform
...s not SMS but data driven, almost immediate message delivery, not polling, etc.)
I have a blog post with background information on this in case it's helpful
http://dalelane.co.uk/blog/?p=938
(Note: MQTT is an IBM technology, and I should point out that I work for IBM.)
...
CSS selector for a checked radio button's label
...;/label>
... and it will work for any structure, with or without divs etc as long as the label follows the radio input.
Example:
input[type="radio"]:checked+label { font-weight: bold; }
<input id="rad1" type="radio" name="rad"/><label for="rad1">Radio 1</label>
<inp...