O''''''''Reilly Network For Information About''''''''s Book part 27 docx
O''''Reilly Network For Information About''''s Book part 2 docx
...
take Java for granted just like we take CPUs for
granted: it's necessary. It was once the place
where all the money was; now it's more of a
commodity.
1 .2. 2.
1 .2. 2.1. Complexity ... this higher river of complexity will flood, forcing us to adopt a
new abstraction, sooner rather than later.
1 .2. 2 .2. Rapid revolution
1 .2. Boiling Frogs
Let's look...
O''''Reilly Network For Information About''''s Book part 16 docx
...
proved to be a problem for adoption for some Smalltalk frameworks. Object-
oriented databases are an elegant solution that ignores the current political
realities.
Don't force structure on ...
schemas, as they exist. Forcing a surrogate unique identifier rather than a
composite primary key also ignores existing realities.
Perform, and scale
High database performance is the sin...
O''''Reilly Network For Information About''''s Book part 23 docx
... it a symbol for the Locations class. This
method will
fire more metaprogramming code that actually adds the properties and methods to
your code that will manage the relationships for you.
Next, ... in, between the <% and %> tags. First, you'll need to make
sure the view has all the information it needs. You'll do this in the edit method,
in the controller. Change t...
O''''Reilly Network For Information About''''s Book part 24 docx
... higher-level
components. For example, you could take this code:
checkoutAddress.showForm( );
if(checkoutAddress.getSeparateBilling) checkoutBilling.showForm( );
creditCardNumber.showForm( );
and ... before you could answer.
To optimize things, you'd have to decide how much information you should
keep close bysay, in your briefcaseversus at home, in your filing cabinets....
O''''Reilly Network For Information About''''s Book part 27 docx
... have
common code for the framework. Only the last part of the call stack should
be different from one continuation to the next. Partial continuations should
provide a good performance boost. ... the JRuby project in the months just before publication
has made incredible strides. It now passes over 90% of the test cases for the basic
Ruby platform. When it reaches Version 1.0 and ca...
O''''Reilly Network For Information About''''s Book part 40 docx
... shared_ptr a general class for handling
resource management, rather than "just" handling dynamically allocated objects.
There is a small overhead in size for shared_ptr compared to ... use a free function as a factory for
shared_ptr<A> here,
because the nested deleter class is private to A. Using this scheme, it isn't possible
for users to create As on the sta...
O''''Reilly Network For Information About''''s Book part 46 docx
... collection of Ruby
programs, libraries, documentations, and binary packages compiled for specific
platforms. You can access RAA at http://www.ruby-lang.org/en/raa.html. RAA is
still far smaller ... Matsumoto
Chapter
6.
Ruby Updates
6.2 Changes from 1.6.5 to 1.7.1
The following information details the changes that are occurring in development
versions 1.7.1 and 1.8 (...
O''''Reilly Network For Information About''''s Book part 49 docx
... fulfilled for any class to work with
Enabling Classes for Use with
lexical_cast
Because lexical_cast only requires that operator<< and operator>>
be
suitably defined for the types ... rewarding.
When to use lexical_cast:
For conversions from string types to numeric types
For conversions from numeric types to string types
For all lexical conversions that...
O''''Reilly Network For Information About''''s Book part 55 docx
... manually, it's easy to forget one of the overloads for
taking one const simple_string& and one const char*. When using
the Operators library, you can't forget, because the library ... that's needed for supporting the full set of operators that we aimed for!
As you can see, we used a different operator class: addable2. If you're using a
compiler that supports p...
O''''Reilly Network For Information About''''s Book part 57 docx
... together to form new concepts.
The Things That Remain
We haven't yet spoken about the remaining part of the Operators library, the
iterator helpers. I won't show example code for those, ... is
simply a case of adding more overloads. For symmetry, you need to allow either
type to be on the left side of the operation. (This is easy to forget when adding
operators manually;...
O''''Reilly Network For Information About''''s Book part 63 docx
... perfectly
sensible. These two elements are all you need to remember, typewise, for this
library: the class any, for storing the values, and the template function any_cast, to
retrieve them. ... that can always be performed on the value stored in
a propertywe need to retrieve the value first. This implies that if there is a known
set of types that are applicable for use with a prope...
O''''Reilly Network For Information About''''s Book part 72 docx
... which is part of another Boost library called Boost.Ref. The
following three lines use the variables that we declared earlier, but this time the
tuples have an int& element, except for the ... elements in the two tuples. To assign or copy
tuples, member-wise assignment or copying is performed, so the two tuples must
have the same number of elements. The elements in the source tupl...
O''''Reilly Network For Information About''''s Book part 81 docx
... small function objects
created for adapting functions/function objects, and combinations of functions.
Although the Standard Library already offers a small part of the functionality
found ... function composition in particular. If you used to be one of them, I'm
hoping that this chapter has managed to convey some of the tremendous power that
is brought forth by the concept as .....
O''''Reilly Network For Information About''''s Book part 84 docx
... m.report();
m.clear();
std: :for_ each(vec.begin(),vec.end(),var(m)=_1);
m.report();
}
That's all there is to it, but before you think that you've got all this nailed ... var_type<memorizer<int> >::type mem(var(m));
std: :for_ each(vec.begin(),vec.end(),mem=_1);
constants can make the expression significantly easier to understand; the same goes
for variables...
O''''Reilly Network For Information About''''s Book part 91 docx
... be used, for example, for a GUI
control that needs to inform observers that the user changed its value, without
having any special knowledge about the clients listening for that information. ... before we knew
about Boost.Function, and then convert the code to make use of function, and
examine which advantages that brings forth. We will start with a class that
supports a simple fo...