Skip to main content

The C++ Standard Library: Recap

The final 7 sections of The C++ Standard Library by Josuttis required lots of attention, but I am glad to have read this book cover to cover.

This book is worth purchasing for Chapter 8 alone in its description of the function objects. The concept of stateful function objects is a powerful idea and can be used in conjunction with the standard library algorithms to produce some powerful behavior.

Function objects provide a great introduction to the algorithms section in that many of the algorithms require function pointers or objects as arguments to execute on the item. Items in a container are typically modified using beginning and end iterators, or even pointers to contiguous arrays of memory.

After the algorithms section, a special containers section described the bitset container. This is a container that will come in handy during protocol development at some point, but whether operations on the bitset are faster than simple C binary operations would be interesting to test.

In the numerics section, the valarrays section proves to be a very interesting way to perform operations on vectors and matrices, and I'm surprised it's not used more often.

To make code internationalized, locales, character traits, and facets were described. I guess this doesn't mean too much to me at the moment since I only operate in the default C locale, but this is a good section to know when developing software for just about anywhere else in the world!

I am surprised the allocator section was so short. The section really only contained an instance of an allocator object along with several built-in C++ functions dealing with memory that has not been allocated (pointer to pointers) or constructed (actual objects). Maybe I will need to get my memory fix through some boost documentation or the books by Scott Meyers.

I also thought that it was interesting to know that folks in Nepal use 10.00.000 to represent 1,000,000.

Comments

Popular posts from this blog

Software Design Principles - SOLID

The SOLID software design principles weren't called SOLID while I was in grad school, but the concepts were there in my Object Oriented Design course. They're worth mentioning here, primarily because I think once you start coding and become dangerous, it's one of the best ways to stay organized once you incorporate it into your daily coding routines, and it even changes your way of thinking for the better: https://en.wikipedia.org/wiki/SOLID

Rehashing C++ With Smart Pointers

Though I have seldom cared about using smart pointers these past three years (primarily because I work mostly with C, which can't support truly encapsulating smart pointers), I have tried to rehash my knowledge with Andrei Alexandrescu's tutorial here: [informit.com] I am absolutely astounded by the attention to detail in this article for something so simple as a single class with overloaded operators. C++ is a language that is not for the faint at heart, so this sort of article helps to navigate through the memory management limitations of C++. I should consider buying Andrei's book with the Eckel book to go with my Stroustroup and Musser books! Where's my amazon wish list...

Matlab and MySQL

I had a lot of data in a MySQL database that I wanted to analyze. I had a copy of Matlab, so I figured the best way to look at this all would be to plot this data and use some GUI elements to go through various combinations. After some Googling, I found this database connector that seemed to do the trick. I downloaded the files, configured mex to use MSVC 2008, built the connector, then I was able to successfully connect over the network! I ran into two problems, though: The connector does not support fetching columns of type TIMESTAMP, and With the magnitude of data (about 180k rows), access times were really slow. I was able to solve problem #1 by changing my columns to DATETIME, which was supported. I'm still trying to figure out problem #2. It may come down to importing all the data directly into Matlab.