By David Vandevoorde

Templates are one of the strongest good points of C++, yet they're too usually missed, misunderstood, and misused. C++ Templates: the total advisor offers software program architects and engineers with a transparent knowing of why, while, and the way to exploit templates to construct and continue purifier, speedier, and smarter software program extra successfully. C++ Templates starts off with an insightful educational on uncomplicated techniques and language gains. the rest of the booklet serves as a finished reference, focusing first on language info, then on quite a lot of coding recommendations, and eventually on complicated functions for templates. Examples used during the booklet illustrate summary strategies and display top practices. Readers study: the precise behaviors of templates the right way to steer clear of the pitfalls linked to templates Idioms and methods, from the elemental to the formerly undocumented how one can reuse resource code with no threatening functionality or defense how one can bring up the potency of C++ courses the right way to produce extra versatile and maintainable software program This useful advisor indicates programmers find out how to take advantage of the entire strength of the template positive factors in C++.

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Fm Page 9 Thursday, December 20, 2007 3:58 PM CH A PT ER 1 ■ O BJECT S AND O BJEC T T YP ES String Literals Creating string literals is easy; we just need to surround a sequence of characters in single or double quotation marks: PS C:\> This is PS C:\> This is "This is a string" a string 'This is a string too' a string too Why support both types of quotes? That is a convenience feature. " PS C:\> "Let's go" Let's go Sometimes, strings get complex, and mixing types of quotation marks becomes a burden.

The `r`n sequence indicates a new line. • `t: The horizontal tab symbol moves several symbols forward, according to the current console settings: PS C:\> "aa`tbb" aa bb • `v: Though the vertical tab symbol is rarely, it may prove useful when doing printing or formatting console-based output. A useful feature of the backtick symbol is that you can use it to escape the new line symbol when typing at the console. ps1xml ` >> | Get-Content | Measure-Object >> Count Average Sum Maximum Minimum Property : 3131 : : : : : Often, we want to input a large block of text without having to take care of escaping quotes.

How nice! fm Page 16 Thursday, December 20, 2007 3:58 PM 16 CHAPTER 1 ■ OBJECTS AND OBJECT TYPES Yes, my winword process is using more than 20MB of virtual memory. In fact, it is eating up about 310 of them. sys is a system file, so I had to use the –Force parameter to get to it. Numbers as Strings Finally in this section we will look at how numbers can be formatted and converted to strings. We do that by using the –f string operator. Some of the particularly useful formatting options follow: • Currency: Use a {0:c} format string.

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