O''''''''Reilly Network For Information About''''''''s Book part 139 pptx
O''''Reilly Network For Information About''''s Book part 139 pptx
... sure that all of the remaining information is encoded in the output stream. Summary In this chapter, we have seen an example of how intelligent encoding of information can pack a lot of data ... this particular adjustment. 17. The proof of this is left to the reader as an exercise; see the problems at the end of the chapter. 18. You may be wondering what happened to the remaining information ... cumulative frequency of 32/64, codes for such messages must lie between 16/64, which is the cumulative frequency of the previous entry, and 31/64. 3. For that matter, a similar problem occurs...
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O''''Reilly Network For Information About''''s Book part 12 pptx
... The type is bound to the object. Therefore, the type of containers can change. An imperfect rule of thumb is that static languages force you to declare variables, but dynamic languages ... different, and convert objects that aren't. The extra syntax provides valuethe compiler has more information to catch bugs earlier. There's a cost, too. Static typing makes you work harder ... compelling, especially for the dynamic, reflective style of programming that leading Java developers seek today. As you add the Web and other deployment steps, the case for dynamic languages...
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O''''Reilly Network For Information About''''s Book part 19 pptx
... same syntactic sugar for hashes as for arrays. Code blocks make iteration tighter and easier. If you're a big Java collections user who's used a dynamic language before, you probably ... 10) = = = 5 => true You get more convenient syntactic sugar. Now, a for loop turns into this: irb(main):021:0> for c in 'g' 'k' irb(main):022:1> puts c 6.1.7. ... Java, numbers are objects , not primitives. For example, you can do this: irb(main):008:0> 4.4765.round => 4 Even nil is a class, standing for nothing: irb(main):009:0> nil.class...
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O''''Reilly Network For Information About''''s Book part 21 pptx
... always take lessons learned into account), partially due to a lack of performance tuning on the original stack, but mostly due to the fact that the performance gains with Rails are easy to achieve. ... surprised at the level of performance I was able to achieve. The Rails version of the app was fast, and faster even than the original Java version. That's partially due to a better understanding ... Some Numbers I'm going to give you some performance and productivity numbers based on experience. I recognize the numbers are imperfect, for a whole lot of reasons. In some ways, the deck...
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O''''Reilly Network For Information About''''s Book part 26 pptx
... approach often makes it much easier to design and refactor complex web screens. For example, here's the rendering for the shopping cart: html divNamed: 'cart' with: [ html small: ... block, so links don't get out of sync. The framework manages them for you. Seaside is modal. This is the author's word for a continuation server approach. Seaside lets you express one ... environments. I used the Squeak IDE for examples in this chapter. Squeak is a dialect of Smalltalk popularized by Disney. 8.4.1. A Little Smalltalk Syntax Before we get too far, you should know...
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O''''Reilly Network For Information About''''s Book part 44 pptx
... the primary reasons for its success, but sometimes also a formidable source of headaches because of the complexity of certain parts of the language. For instance, the rules for numeric conversions ... the resource still exists. If it doesn't, accessing it wreaks havoc. With weak_ptrs, the information that the shared resource has been destroyed is propagated to all weak_ptrs observing ... std::unary_function), we could compose any type of function object out of it. For instance, we could have searched for the first string not matching "of using": vector<weak_ptr<string>...
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O''''Reilly Network For Information About''''s Book part 60 pptx
... to perform text substitutions. It searches through the input data, finding all matches to the regular expression. For each match of the expression, the algorithm calls match_results::format ... calling regex_replace, we are expected to provide a format string as an argument. This format string determines how the substitution will work. In the format string, it's possible to refer to ... subexpression for new by the index 1 of match_results. We then hold an instance of sub_match, which contains a Boolean member, matched, that tells us whether the subexpression participated in...
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O''''Reilly Network For Information About''''s Book part 68 pptx
... contains the definition for the exception class bad_visit. "boost/variant/static_visitor.hpp" contains the definition for the visitor class template. The following partial synopsis covers ... variant types, only in the form of unions, that exist mainly for C compatibility. Boost.Variant remedies the situation through a class template variant, and accompanying tools for safely storing and ... "boost/variant/variant_fwd.hpp" contains forward declarations of the variant class templates. "boost/variant/variant.hpp" contains the definitions for the variant class templates. "boost/variant/apply_visitor.hpp"...
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O''''Reilly Network For Information About''''s Book part 77 pptx
... already encoded in the type of the container, and redundant information of this kind is typically unnecessary for modern libraries). std: :for_ each( p_statuses.begin(), p_statuses.end(), boost::bind(&status::report,_1)); ... intimidating at first, and by all rights it is because we have yet to define part of the machinery. However, the part to focus on here is where the type deduction takes place. You'll note ... binder that, at least in part, mimics the syntax of Boost.Bind. To avoid stretching this digression over several pages, we shall only support one type of binding, and that is for a member function...
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O''''Reilly Network For Information About''''s Book part 82 pptx
... produce, and they provide only argument binding, not bindings for expressions. Given that both flexible support for binding arguments and for creating function objects directly from expressions ... constructs (for example, while_loop and for_ loop). "boost/lambda/switch.hpp" defines the lambda equivalent of switch statements. "boost/lambda/construct.hpp" defines tools for ... arguments." The second part of the expression actually invokes the function by saying, "Hey! Here are the three arguments that you need." Look at the first part of the expression...
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