Contents

# About Hashes

Create a hash:

```ruby
h = {}
p h.class
Hash
p h
{}
```

Initialize a hash:

```ruby
h = {:a => 0, :b => 1}
p h
{:a=>0, :b=>1}
```

Change a value:

```ruby
h[:b] = 2
p h
{:a=>0, :b=>2}
```

Add a new entry:

```ruby
h[:c] = 2
p h
{:a=>0, :b=>2, :c=>2}
```

Delete an entry:

```ruby
h.delete(:a)
p h
{:b=>2, :c=>2}
```

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
markdown_helper-2.5.4	markdown/use_cases/run_irb/run_irb/markdown.md
markdown_helper-2.5.3	markdown/use_cases/run_irb/run_irb/markdown.md
markdown_helper-2.5.2	markdown/use_cases/run_irb/run_irb/markdown.md
markdown_helper-2.5.1	markdown/use_cases/run_irb/run_irb/markdown.md
markdown_helper-2.5.0	markdown/use_cases/run_irb/run_irb/markdown.md
markdown_helper-2.4.0	markdown/use_cases/run_irb/run_irb/markdown.md