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What data is stored in Ephemeral Storage of Amazon EC2 instance?
...ou don't have to worry about data on your root device.
More details here: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/RootDeviceStorage.html
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Using custom std::set comparator
...tor< defined, then you can just use std::less<>.
As mentioned at http://en.cppreference.com/w/cpp/container/set/find C++14 has added two new find APIs:
template< class K > iterator find( const K& x );
template< class K > const_iterator find( const K& x ) const;
which...
How can I use redis with Django?
...
This Python module for Redis has a clear usage example in the readme: http://github.com/andymccurdy/redis-py
Redis is designed to be a RAM cache. It supports basic GET and SET of keys plus the storing of collections such as dictionaries. You can cache RDBMS queries by storing their output in ...
Why use argparse rather than optparse?
...ture.
argparse is better for all the reasons listed on its original page (https://code.google.com/archive/p/argparse/):
handling positional arguments
supporting sub-commands
allowing alternative option prefixes like + and /
handling zero-or-more and one-or-more style arguments
producing more info...
what does the __file__ variable mean/do?
...are considered to be "special" by convention and serve a special purpose.
http://docs.python.org/reference/datamodel.html shows many of the special methods and attributes, if not all of them.
In this case __file__ is an attribute of a module (a module object). In Python a .py file is a module. S...
Why are unsigned int's not CLS compliant?
...VB7/7.1 not to implement as well (it's implemented now in VB8).
To quote:
http://msdn.microsoft.com/en-us/library/12a7a7h3.aspx
The CLS was designed to be large enough to include the language
constructs that are commonly needed by developers, yet small enough
that most languages are able to support...
When to use a key/value store such as Redis instead/along side of a SQL database?
...I think nothing explains better the use cases for Redis than this article:
http://antirez.com/post/take-advantage-of-redis-adding-it-to-your-stack.html
I bet you'll have an aha! moment. ;)
A quote from a previous reader:
I've read about Redis before and heard how companies are using it, but ne...
What is the memory consumption of an object in Java?
...n overhead of 16 bytes on 32-bit systems (and 24-byte on 64-bit systems).
http://algs4.cs.princeton.edu/14analysis/ is a good source of information. One example among many good ones is the following.
http://www.cs.virginia.edu/kim/publicity/pldi09tutorials/memory-efficient-java-tutorial.pdf is a...
How to declare std::unique_ptr and what is the use of it?
...re guaranteed to destroy the object they manage when they go out of scope.
http://en.cppreference.com/w/cpp/memory/unique_ptr
In this case:
unique_ptr<double> uptr2 (pd);
pd will be destroyed when uptr2 goes out of scope. This facilitates memory management by automatic deletion.
The case ...
Backing beans (@ManagedBean) or CDI Beans (@Named)?
...d-like annotation for CDI beans, but I haven't played with it personally.
http://seamframework.org/Seam3/FacesModule
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