Sample Overload Article (title)Style and structure of an Overload article on the Web (byline entered separately from article content)
First section
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A Reference
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What has all this got to do with exceptions, you may wonder? Well, the C++ hello-world (this one extracted from The C++ Programming Language [TC++PL]) is functionally similar.
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A Footnote
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Consider a shared library1 which is used by multiple clients.
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A Quote
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Here's a real quote.
ALGOL 68 was the first (and possibly one of the last) major language for which a full formal definition was made before it was implemented.
~ C.H.A. Koster
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A Block Quote
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This is a block quote. (class="blockquote")
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An Indented Paragraph
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Indented Paragraph. (class="indented").
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An Unordered List
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Unordered list:
- An item .
- An item .
- An item .
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An Ordered List
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Ordered list:
- An item .
- An item .
- An item .
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An Image (non-figure)
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The naïve approach to multiplication is to multiply the underlying integer values and then divide by the scaling factor since
Similarly, for division we have...
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A Figure
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| Figure 1 |
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A Table
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| Pattern | Classification on Purpose | Classification on Intent |
|---|---|---|
| Abstract Factory | Creational | Construction |
| Decorator | Structural | Extension |
| Interpreter | Behavioural | Operation |
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A Sidebar Table
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| Table 1 |
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A Sidebar Table with a Paragraph
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| Printing Errors in C |
The C standard library provides two functions for mapping 'error' codes, maintained in the global pseudo-variable errno, into human-readable values. The first, strerror(), returns a non-NULL C-style string mapping any integer value, including all of those defined (both in the standard, and all implementation-defined ones) in errno.h, into a human-readable message. For example: strerror(ERANGE); → "Result too large"
strerror(EDOM); → "Numerical argument out of
domain"
strerror(EMFILE); → "Too many open files"
strerror(0); → "No error detected"
strerror(123456); → "Unknown Error (123456)"
It's common to pass the current value of errno, to get a string explaining what most recently behaved in a non-normative manner within (the currently executing thread of) your program. There are issues with re-entrancy in the use of strerror(); see STRERROR] for more information. The second standard library function, perror(), is used to print a message that also includes the message associated with the current value of errno, separated by ": ", as in:
errno = ERANGE;
perror("oops"); → "oops: Result too large"
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A Program Fragment
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// hello-world.cpp
#include <iostream>
int main()
{
std::cout << "Hello world!" << std::endl;
}
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A program Listing
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The following is table (class="sidebartable") containing a pre (class="programlisting"). The last row contains the title in a td (class="title")
#include <iostream>
int main()
{
std::cout << "Hello world!" << std::endl;
}
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| Listing 3 |
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Specialties
Inline Code
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The second standard library function, perror(), is used to print a message that also includes the message associated with the current value of errno, separated by ": ".
File Names
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Assume fileName is abc.def, and that no such file exists.
Pattern Names
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They prefer PfA (Parameterise from Above) where the application instantiates the required objects and passes them as dependencies via a public interface. This provides greater opportunities to decouple dependencies and dependants via abstract interfaces.
A Lesson or Definition Paragraph
The following style was created for the Quality Matters articles by Matthew Wilson.
The following is a paragraph (class="lesson").
Definition: A contingent report is a block of information output from a program to inform its controlling entity (human user, or spawning process) that it was unable to perform its normative behaviour. Contingent reports are a part of the program logic proper, and are not optional.
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References and ...
[TC++PL] The C++ Programming Language, Special Edition, Bjarne Stroustrup, Addison-Wesley, 2000
1 For the purposes of this discussion, the language is C++ and the platform is Windows and DLLs. However, the principles described also apply to other platforms and languages to a greater or lesser degree. In any case, a stable and consistent ABI between clients and libraries is presumed.
2 Care must be taken with adding a new overload for an existing function, of course!