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How to create a GUID/UUID in Python
... they keep updating)
>>> import uuid
>>> # make a UUID based on the host ID and current time
>>> uuid.uuid1()
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
>>> # make a UUID using an MD5 hash of a namespace UUID and a name
>>> uuid.uuid3(uuid.NAMESPACE_...
Read binary file as string in Ruby
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You can probably encode the tar file in Base64. Base 64 will give you a pure ASCII representation of the file that you can store in a plain text file. Then you can retrieve the tar file by decoding the text back.
You do something like:
require 'base64'
file_cont...
correct way to use super (argument passing)
...pairs off of **kwargs or remove them from *args. Instead, you can define a Base class which unlike object, absorbs/ignores arguments:
class Base(object):
def __init__(self, *args, **kwargs): pass
class A(Base):
def __init__(self, *args, **kwargs):
print "A"
super(A, self)._...
How to change Status Bar text color in iOS
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Set the UIViewControllerBasedStatusBarAppearance to YES in the .plist file.
In the viewDidLoad do a [self setNeedsStatusBarAppearanceUpdate];
Add the following method:
- (UIStatusBarStyle)preferredStatusBarStyle
{
return UIStatusBarStyleLigh...
Rails - How to use a Helper Inside a Controller
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You can use
helpers.<helper> in Rails 5+ (or ActionController::Base.helpers.<helper>)
view_context.<helper> (Rails 4 & 3) (WARNING: this instantiates a new view instance per call)
@template.<helper> (Rails 2)
include helper in a singleton class and then singleton.h...
Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...t,
fixed responsive layout.
These fiddles are completely Bootstrap-free, based on pure CSS media queries, which makes them a good starting point, for anyone willing to craft similar solution without using Twitter Bootstrap.
...
Inheriting from a template class in c++
...ate, otherwise it is just one type. It cannot be a non-template whilst its base magically is. (Its base may be a template instantiation, though you seem to want to maintain the base's functionality as a template.)
share
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Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
... @einpoklum And what exactly would you gain from an abstract base class? Take std::set as an example. It does not inherit from an abstract base class. How does that limit your usage of std::set? Is there anything you cannot do with a std::set because it does not inherit from an abstrac...
Why do I have to access template base class members through the this pointer?
...le in template <typename T> struct Foo : T::A {};, T::A is used as a base class and hence is unambiguously a type. If Foo is instantiated with some type that has a data member A instead of a nested type A, that's an error in the code doing the instantiation (phase 2), not an error in the templ...
What's the best manner of implementing a social activity stream? [closed]
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I have created such system and I took this approach:
Database table with the following columns: id, userId, type, data, time.
userId is the user who generated the activity
type is the type of the activity (i.e. Wrote blog post, added photo, commented on user's photo)
data is a se...