Module: Kernel

Defined in:
lib/notation.rb

Overview

Extend the core Kernel module

Constant Summary collapse

NOTATION_VERSION =

Version of the notation library

'0.3.0'

Instance Method Summary collapse

Instance Method Details

#°(degrees) ⇒ Object

Degrees to radians

Example:



154
155
156
 
# File 'lib/notation.rb', line 154

def

#±(value, delta) ⇒ Object

Plus or minus (returns array with both values)

Example:



145
146
147
 
# File 'lib/notation.rb', line 145

def

#Δ(a, b) ⇒ Object

Delta (difference between two values)

Example:



100
101
102
 
# File 'lib/notation.rb', line 100

def

#∏(*args) ⇒ Object

Pi product, i.e. the product of all elements. Improved to handle arrays and individual arguments

Examples:



34
35
36
37
 
# File 'lib/notation.rb', line 34

def

#∑(*args) ⇒ Object

Sigma, i.e. the sum of all elements. Improved to handle arrays and individual arguments

Examples:



22
23
24
25
 
# File 'lib/notation.rb', line 22

def

#√(value) ⇒ Object

Square root

Example:



44
45
46
 
# File 'lib/notation.rb', line 44

def

#∛(value) ⇒ Object

Cube root

Example:



53
54
55
 
# File 'lib/notation.rb', line 53

def

#∜(value) ⇒ Object

Fourth root

Example:



62
63
64
 
# File 'lib/notation.rb', line 62

def

#∞ ⇒ Object

Infinity constant

Example:



80
81
82
 
# File 'lib/notation.rb', line 80

def

#≈(a, b, epsilon = 1e-10) ⇒ Object

Approximately equal (within epsilon)

Example:



109
110
111
 
# File 'lib/notation.rb', line 109

def

#≠(a, b) ⇒ Object

Not equal

Example:



118
119
120
 
# File 'lib/notation.rb', line 118

def

#≤(a, b) ⇒ Object

Less than or equal

Example:



127
128
129
 
# File 'lib/notation.rb', line 127

def

#≥(a, b) ⇒ Object

Greater than or equal

Example:



136
137
138
 
# File 'lib/notation.rb', line 136

def

#！(n) ⇒ Object

Factorial

Example:

Raises:

  • (ArgumentError) 


89
90
91
92
93
 
# File 'lib/notation.rb', line 89

def

#％(value) ⇒ Object

Percentage (divide by 100)

Example:



163
164
165
 
# File 'lib/notation.rb', line 163

def

#｜(value) ⇒ Object

Absolute value

Example:



71
72
73
 
# File 'lib/notation.rb', line 71

def