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Special constants in Ruby:
*
Special Constants in Ruby
*
FILE
*
dir
*
PROGRAM NAME or 0
*
*
etc
*
ARGV or
*
STDIN
*
STDOUT
*
STDERR
*
stderr
*
stdout
*
stdin
*
ENV
Table Of Contents
0
Getting started
1
Casting type conversions
2
Arrays
3
Classes
4
Hashes
5
Blocks and procs and lambdas
6
Inheritance
7
Control flow
8
Strings
9
Symbols
10
Exceptions
11
Thread
12
Methods
13
Method missing
14
Numbers
15
Iteration
16
Regular Expressions and regex based operations
17
Comparable
18
Gem usage
19
Design patterns and idioms
20
Loading source files
21
Range
22
Comments
23
Operators
24
Operators
25
Special constants in Ruby
26
Modules
27
Ruby version manager
28
Gem creation / management
29
Constants
30
Variable scope and visibility
31
rbenv
32
Environment variables
33
Singletons
34
File I/O
35
Time
36
Queue
37
Destructuring
38
IRB
39
Enumerators
40
C extensions
41
Struct
42
Metaprogramming
43
Dynamic evaluation
44
instance eval
45
Message passing
46
Keyword arguments
47
DateTime
48
Truthiness
49
JSON with Ruby
50
Implicit receives, understanding
51
Monkey patching
52
Introspection
53
Monkey patching
54
Refinements
55
Monkey patching in Ruby
56
Catching exceptions with begin rescue
57
Command line apps
58
Debugging
59
Pure RSpec JSON API testing
60
Recursion
61
Installation
62
ERB
63
Introspection
64
Random numbers
65
Getting started with Hanami
66
OptionParser
67
Splat operator
68
Multidimensional Arrays
69
Enumerable
70
Ruby access modifiers
71
Operating system or shell commands
72
Contributors