ruby hash viewer

Ruby [Hash method summary]

1. To add a default value Hash: h = (1,2,3,4) # => (1 => 2, 3 => 4) h.default = 7 h [1] # => 2 h [3] # => 4 h [4] # => 7 h [5] # => 7 2. . Hash to add key-value pair: h = () # => () h.store ( "a", 1) # => 1 h [ "a

Ruby Hash in accordance with the natural order of output

Had intended to replicate the order in accordance with the output, but the results unexpected. Checked and, hash itself is disordered Followed by a post to see the Japanese http://gendosu.ddo.jp/redmine/wiki/1/Hash% E3% 81% AE% E9% A0% 86% E5% BA% 8F

ruby hash array replication

Marshal.load (Marshal.dump (arr))

my way in ruby No. 3 Course

Containers: Array: Array of values at ruby It really is his mother's loose on the chaos to come , however it is very convenient. Sub-values: a [index, count] from the index bit and started to admit count spaces. There is a second written a [index .. ...

The basic types of ruby (2)

Array of common computing method <<Additional elements such as: [1,2] <<3 Back [1,2,3] + Merge two arrays in series methods such as: [1,2] + [3,4] return [1,2,3,4] - Array comparison difference set to delete the elements appear in an array for

ruby syntax tutorials

The first part of the Ruby language based Chapter § 1.1 Ruby Ruby language overview of the history Ruby language is Japanese inventor Yukihiro Matsumoto (Matsumoto Yukihiro), we affectionately called him "Matz". May be contrary to everyone's

Ruby Study Notes (a)

1, Ruby's comments with "#" at the beginning, followed by "=>" comment later in the code that is the return value. 2, print method to print does not wrap, puts method of printing and wrapping. 3, with the def keyword to def

rails version of the change (b) - rails of the introduction

Prompted the new Rails 2.2 features October 24, Rails has released a preview version 2.2, Rails This is the history of a major version upgrade! Mainly includes the following major changes: 1, support internationalized! Rails2.2 integrates a i18n framework

Haml - simple and elegant template language (change)

Introduction Haml is a simple and elegant template language, can be applied to Ruby on Rails, PHP and other Web development platform, can greatly reduce the template code to reduce redundancy and improve readability. And Haml is a complete template langua

Redis, from the Ground Up (3)

Expiry The EXPIRE command enables a timeout to be set for a specified key. Once the timeout is reached, the server can delete the key. We call a key volatile if it is set to expire. Note that expiry semantics changed very significantly with Redis 2.1.3. I

Medium ruby Note the use of hash

Ruby because of the weak type of properties, so in the development process, a certain attention. For example: a = Hash.new a [1] = 1 If you are using a [ "1"], that is, return nil. Because of the type int and string types are one of the two ...

ruby cookbook - Hash

Hash 1. Except for strings and other built-in objects, most objects have a hash code equivalent to their internal object ID. As seen above, you can override Object # hash to change this, but the only time you should need to do this is if your class a ...

ruby cookbook - Creating a Hash with a Default Value

Creating a Hash with a Default Value When a letter can't be found in the hash, Ruby calls the block passed into the Hash constructor. That block puts a new array into the hash, using the missing letter as the key. Now the letter is bound to a uni ...

ruby cookbook - Using an Array or Other Modifiable Object as a Hash

Recipe 5.5. Using an Array or Other Modifiable Object as a Hash Key Suppose you want a reliably hashable Array class. If you want this behavior universally, you can reopen the Array class and redefine hash to give you the new behavior. But it's s ...

Ruby will be an array into hash

ruby can be an even number of elements in the array to a hash, but the element number is odd error occurs >> arr = [1,2,3,3] => [1, 2, 3, 3] >> Hash[*(arr)] => {1=>2, 3=>3} >> arr = [1,2,3,3,6] => [1, 2, 3, 3, 6] >

ruby convert array to hash method

class Array def map_to_hash map { |e| yield e }.inject({}) { |carry, e| carry.merge! e } end end Use: [1, 2, 3].map_to_hash { |e| {e => User.find(e)} }

Ruby on Rails Routing - Simple Examples

This article contains a list of ruby on rails routing examples. If you find you have any questions please leave a comment. Routes are processed from the top of routes.rb down. If a route is matched it will stop processing the routes.rb file and use that r

Ruby Symbol

Ruby is a completely cross-platform object-oriented scripting language, built on the Ruby-based Web framework Ruby on Rails (ROR) is the field of web development is gaining increasing acceptance. ROR substantial use of the Ruby language features, Symbol i

Ruby User's Guide>> Arrays

You can through the square brackets ([]) in a comma-separated listed some items to create the array. Ruby array can accommodate different types of objects. ruby> ary = [1, 2, "3"] [1, 2, "3"] Like a string array can be as a link or duplication. ruby

Topsy Ruby Series: Topsy Symbol

Learn Ruby would Symbol it puzzled me too, so look to spend more time Symbol. Symbol Chinese name symbols, because the tags are used to a certain kind of things. Early read some information, in my mind, feel like a String, like Symbol, you can visit ...

SipUtils: visit Ali SIP software platform (Service Integration Platform) is a third-party tool Ruby

SipUtils? Is a helper, for agile accessing the api @ AliSoft? SIP (Services Integration Platform) SipUtils? Is a visit to Ali SIP software platform (Service Integration Platform) is a third-party Ruby libraries, it can be very convenient and quick to ...

My way in ruby

Poor road of the ruby today review . . Configuration environment that is not nonsense to say a direct access to the characteristics of ruby language study. How children process method: def sayGoodnight (name) result = "Goodnight, # (name)" ...

Ruby Operators Summary

Personal sense of "Ruby Programming Language" is indeed a good book, it will have bits and pieces of the Ruby point up. Here, some of my experiences from their own point of Ruby language school operator to be a notebook-style summary. Welcome to

Ruby on rails ActiveRecord

ActiveRecord Introduction 1. When you create an ActiveRecord:: Base subclass, are in fact the packaging of a database table. 2.active record the assumption that table name is the plural form of categories. If the class name contains more than one in capit

Ruby standard library Glance

Of course, look at the document with details of ri Text base64.rb Deal with Base64 encoding module csv.rb CSV (Comma Separated Values) database ruby 1.8 Characteristics digest.so Message Digest library please refer to [ruby-src: ext / digest / digest ...

Ruby's Magic Notes II study meta-programming

meta-programming 1, Create a object on the fly. We have created a vacuum-type Person, now we want to add point method: OK, we open this category: We found that p1 can use who? This way. We use another method to open in this category, from an array to ...

Let Ruby On Rails into the Enterprise Development - How to upgrade

As we all know, the program delivered to the client after the upgrade there is a maintenance process. For stand-alone procedure, a relatively simple upgrade, but for the enterprise Web development process, how to conduct the most effective to upgrade it?

JavaEye chat client [ruby]

Ruby recent study at the GUI tool Shoes, want to do with a ruby and JE Talker similar instrument, so the first to write a JavaEye the Client. Certification has been completed, get_all (access to site-wide chat), get_list (to obtain their own subscriptions

Ruby's Enumerable module study

Read into the Enumerable module type, you can use a variety of iterators and block calls. Introduction here of one of each, collect, sort and sort_by 4 solution. 20.4.1 each method each approach is to use Enumerable module must want the definition of the

Medium ruby object

ruby built-in categories, such as String, Array, Hash, Numeric, Range, Symbol, TrueClass, FalseClass, NilClass literally has its own writing, and he kind of example shows the creation of the necessary, often using new

objects in ruby

ruby built-in categories, such as String, Array, Hash, Numeric, Range, Symbol, TrueClass, FalseClass, NilClass literally has its own writing, and he kind of example shows the creation of the necessary, often using new

The Ruby Programming Language Introduction

Click here to download chm part1 Click here to download pdf Click here to download chm part2 Tip: chm version 【Description】 Details of the book Ruby 1.8 and 1.9 versions of the various aspects. Ruby in a brief summary, the book details the following: Ruby

Ice data structure used in the performance of the ruby way

Mapping for User-Defined Types

Ruby on Rails and to use Action Web Service to create Web Services

Action Web Service Module will be at Ruby on Rails implementation of Web services. Action Web Service will be the creation of SOAP and XML-RPC Web Services in support of server-side protocol. You can use the Declaration and the Action Web Service released

I like Ruby's 37 reasons

I do not intend to waste time talking about the history of Ruby, if you have not heard of it, you can go to its home page to see www.ruby-lang.org , Or to its newsgroup comp.lang.ruby. If you know Ruby, I will talk about why I like it It is object-oriente

Ruby to learn a

Scratch the last few days, start to make better preparations for a look at Ruby's a few books. Such as the "Programming Ruby" "Ruby for Rails" "The ruby way" and so few books. Want to learn from the experience and re ...

[Ruby 1.9]> -> fish bone operator

【Accordance with the recommendations of FX , officially named operator for the fish bones,> -> tail fish bone, | -> for bluegill bone 】 Ruby 1.9 has a change: lambda acceptable proc. In light of the new lambda syntax: -> x {...}, we can do som

Step-by-step learning Ruby (1): Ruby Introduction

Article Abstract Ruby is how to Ready ScreenShot Ruby is how to The inventor of Ruby Yukihiro Matsumoto Yukihiro "matz" Matsumoto , A mixture of his favorite languages (Perl, Smalltalk, Eiffel, Ada and Lisp) have had a command function and the n

Ruby is how to

Ruby is how to The inventor of Ruby Yukihiro Matsumoto Yukihiro "matz" Matsumoto , A mixture of his favorite languages (Perl, Smalltalk, Eiffel, Ada and Lisp) have had a command function and the new programming language features. He often said t

Rais_Writing_Index translator: Ragnarok @ Ruby Chinese community translation team

Translator: Ragnarok @ Ruby Chinese community translation team Reprint requests to retain the copyright information, rights reserved! writing / index.html Use Spec:: Ralis the preparation of sample introduction Spec:: Rails provides four kinds of dif ...

Chinese ruby

# encoding: utf-8 out=File.open("out.txt","w") Meeting ={ Topics :" Scientific development ", Place :" Dean's second floor meeting room " } Meeting [: Time ]="3 Two points on the afternoon of 12 December " Meeting .each do | Parameters , Value | out.write

Ruby Video (Chinese and English)

Chinese Video address: 1: Ruby Overview: http://www.boobooke.com/v/bbk1303/ 2: Ruby Description: http://www.boobooke.com/v/bbk1840/ 3: Ruby syntax description: http://www.boobooke.com/v/bbk1325 4: Ruby basic grammar: http://www.boobooke.com/v/bbk1856/ 5:

Ruby Study Notes (1)

1: single and double quotation marks the difference between Single quotation marks can not contain variables, double quotes can contain variables. In ruby, the single quotation marks in the \ n so that sort of escape newline characters are not valid, ...

ruby objects to understand

All are objects in ruby. Object is essentially a fragment of memory there, by fragments of the type, length, in order to characterize. Fragment values differ, the objects are different. Object methods are defined for each segment of the memory sub-se ...

Ruby in the string and symbol

Ruby beginners, it is often the string (String class) and symbol (Symbol) and could not distinguish the two types of variables, in fact, we need not dwell within these two types of variables to achieve, just remember that their characteristics and th ...

ruby language data query methods to obtain results

Not just to remove the ruby iterative query result set of data turned over a long time the document. Finally at this address: http://www.tmtm.org/en/mysql/ruby/README_ja.html to find the answer. But it is Japanese, but fortunately I have some basic J ...

learning ruby IO (b)

zip file compression and decompression Achieved using the extension rubyzip Installation: gem install rubyzip File compression steps: Use the zipfile in the open method to open zip files, call the add method to add files to the compressed file Decompressi

Ruby / Rails in YAML

YAML YAML Ain't Markup Language. YAML is a recursive type definitions similar to GNU. GNU on Unix, said "No", YMAL then is XML, said "No". In the Ruby world, YAML can be said that the blood flow Ruby. YAML is to the Ruby, XML-like

Ruby on Rails in YAML

YAML YAML Ain't Markup Language. YAML is a recursive type definitions similar to GNU. GNU on Unix, said "No", YMAL then is XML, said "No". In the Ruby world, YAML can be said that the blood flow Ruby. YAML is to the Ruby, XML-like

Ruby internal variables used

Local domain: the role of a thread within a certain to be effective, the following can also be seen as local variables within the thread. PS: here explain a few variables are related in a regular match, is the matching process is the same as the code here
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