Ruby for Rails phần 10 ppsx
Ruby for Rails phần 10 ppsx
... the process is to install RubyGems itself.
The RubyGems project is hosted by RubyForge. The homepage for RubyGems
is http://rubyforge.org/projects/rubygems. Look for the Latest File Releases ... redefined 237
colon (for symbol) 235
curly braces (for hashes) 235
ellipsis (for ranges) 235
for arrays ([]) 235, 279
for regular expressions
(//) 315
forward slashes (for regular
expr...
Ruby for Rails phần 2 ppsx
... in
Ruby and shipped with
Ruby) , lightTPD
CGI Library
CGI data processing
routines
Parses incoming
form data
Part of the Ruby
standard library
ERb
"Embedded Ruby& quot;
Templating system
for ... extension (require it)
ruby -rprofile
version
Show Ruby version information
ruby version
A Rails application walk-through 45
Initializing the databases
To create the database fo...
Linux all in one desk reference for dummies phần 10 ppsx
... execution of the loop. For example, to add the numbers
from 1 to 10, excluding 5, you can use a
for loop that skips the body when
the loop index (
i) is 5:
for( i=0, sum=0; i <= 10, i++)
{
if(i == ... fprintf(FILE *stream, const char *format, );
int printf(const char *format, );
int sprintf(char *buffer, const char *format, );
The C Library
The ANSI and ISO standards for C define...
CMMI for Development phần 10 ppsx
... selected for validation
2. Validation methods for each product or product component
3. Requirements for performing validation for each product or product
component
4. Validation constraints for ... conducted using a formal evaluation
approach.
Refer to the Decision Analysis and Resolution process area for more
information about defining criteria and alternatives and perform...
Ruby for Rails phần 1 pps
... 85
The irb-based Rails application console 89
3.4 Summary 90
Ruby for Rails
RUBY TECHNIQUES FOR RAILS DEVELOPERS
DAVID A. BLACK
MANNING
Greenwich
(74° w. long.)
vii
PART ITHE RUBY/ RAILS LANDSCAPE ... xxvi
about this book
Welcome to Ruby for Rails. This book is an introduction to the Ruby programming
language, purpose-written for people whose main reason for wanti...
Ruby for Rails phần 3 pps
... CHAPTER 3
Ruby- informed Rails development
because of Ruby (Ruby doesn’t care), but because leaving the parentheses off is a
standard Rails convention.
The common idioms you use in Rails aren’t ... sent to
I/O sockets, and so forth. It’s not uncommon for
programs to define a method called
send
that conflicts with Ruby s built-
in
send
method. Therefore, Ruby gives you an...
Ruby for Rails phần 4 pptx
... inheritance bones.
5.6.1 Inheritance and Rails engineering
Inheritance is one of the key organizational techniques for Rails program design
and the design of the Rails framework. You can see key cases ... your Ruby programs.
Sure enough, Ruby gives you a full suite of programming techniques for creat-
ing objects on a batch or factory basis. You don’t have to define a separate...
Ruby for Rails phần 5 pdf
... use an
absolute path for a file.
This may happen if you create a class or module with a name that’s similar to
the name of a Ruby built-in class or module. For example, Ruby comes with a
String
... exceptions
Way back in chapter 1, we looked at how to test code for syntax errors:
$ ruby -cw filename.rb
Passing the
-cw
test means Ruby can run your program. But it doesn’t mea...
Ruby for Rails phần 6 pdf
... huge roles in Ruby and Rails. Some of the founda-
tional Ruby libraries upon which Rails is built use hashes to pass data around; in
particular, the Ruby
CGI library makes your CGI form data available ... of
the irb session format for the code examples, and you can often try the examples
with small variations to get a feel for how Ruby behaves.
9.1 Ruby s literal constructors...
Ruby for Rails phần 7 doc
... "b", "y"]
Another common use case for
split
is performing a conversion from a flat, text-
based configuration file to a Ruby data format—array, hash, or something fancier
What are ... of Ruby built-in methods take regular expressions as arguments
and perform selection or modification on one or more string objects. Regular
expressions are used, for example, to sca...