[ruby-core:72390] [Ruby trunk - Bug #11848] [Open] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[ruby-core:72390] [Ruby trunk - Bug #11848] [Open] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[prodis]

Issue #11848 has been reported by Fernando Hamasaki de Amorim.

----------------------------------------
Bug #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848

* Author: Fernando Hamasaki de Amorim
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:72391] [Ruby trunk - Feature #11848] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[prodis]

Issue #11848 has been updated by Fernando Hamasaki de Amorim.

Tracker changed from Bug to Feature

----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-55678

* Author: Fernando Hamasaki de Amorim
* Status: Open
* Priority: Normal
* Assignee: 
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:72393] [Ruby trunk - Feature #11848] [Feedback] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[ruby-core]

Issue #11848 has been updated by Marc-Andre Lafortune.

Status changed from Open to Feedback
Assignee set to Yukihiro Matsumoto

So many decisions in this seem completely arbitrary (and inconsistent), plus you don't give a use case, there's no way this would ever be accepted.

I'd suggest you build your own hash of true/false values and use that.

----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-55680

* Author: Fernando Hamasaki de Amorim
* Status: Feedback
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:72394] [Ruby trunk - Feature #11848] [Rejected] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[matz]

Issue #11848 has been updated by Yukihiro Matsumoto.

Status changed from Feedback to Rejected

You forgot empty string/array/hash to be false. ;-)
But Ruby is not Python.

Matz.


----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-55681

* Author: Fernando Hamasaki de Amorim
* Status: Rejected
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:72395] [Ruby trunk - Feature #11848] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[eregontp]

Issue #11848 has been updated by Benoit Daloze.


I like the idea of having explicit conversion between booleans/integers, such that 0.to_b => false and true.to_i => 1.
!int.zero? can be a workaround for the first conversion but I only see a ternary condition for the second case.
Also, nil.to_i is already 0.

----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-55682

* Author: Fernando Hamasaki de Amorim
* Status: Rejected
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:72414] [Ruby trunk - Feature #11848] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[prodis]

Issue #11848 has been updated by Fernando Hamasaki de Amorim.


The idea of ***to_b*** method is inspired in Rails and Swift:

* ActiveRecord::Type:Boolean in Rails:
https://github.com/rails/rails/blob/fc4084fc5bdf60c46824094f4d6a362304c047f6/activerecord/lib/active_record/type/boolean.rb#L10
https://github.com/rails/rails/blob/fc4084fc5bdf60c46824094f4d6a362304c047f6/activerecord/lib/active_record/connection_adapters/column.rb#L8

* NString#boolValue property in Swift:
https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/index.html#//apple_ref/occ/instp/NSString/boolValue



----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-55700

* Author: Fernando Hamasaki de Amorim
* Status: Rejected
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:73591] [Ruby trunk - Feature #11848] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[andrew]

Issue #11848 has been updated by Andrew Vit.


I've had to do this in a few places over the years myself:

~~~
TRUTHY_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE', 'y', 'Y', 'yes', 'YES']
FALSY_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE', 'n', 'N', 'no', 'NO']
~~~

> You forgot empty string/array/hash to be false. ;-)

I think the main reason for this is handling user input (from a file like CSV or other), so other types like Array/Hash are not expected there: just basic scalar values.

Still, it probably only makes sense for some specific situations.

----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-56786

* Author: Fernando Hamasaki de Amorim
* Status: Rejected
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:77788] [Ruby trunk Feature#11848] New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.

[prodis]

Issue #11848 has been updated by Fernando Hamasaki de Amorim.


Andrew Vit wrote:
> I've had to do this in a few places over the years myself:
> 
> ~~~
> TRUTHY_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE', 'y', 'Y', 'yes', 'YES']
> FALSY_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE', 'n', 'N', 'no', 'NO']
> ~~~
> 
> > You forgot empty string/array/hash to be false. ;-)
> 
> I think the main reason for this is handling user input (from a file like CSV or other), so other types like Array/Hash are not expected there: just basic scalar values.
> 
> Still, it probably only makes sense for some specific situations.

Andrew Vit, you can use **`wannabe_bool`** gem: https://github.com/prodis/wannabe_bool

----------------------------------------
Feature #11848: New #to_b method for String, Symbol, Numeric, NilClass, TrueClass and FalseClass.
https://bugs.ruby-lang.org/issues/11848#change-61093

* Author: Fernando Hamasaki de Amorim
* Status: Rejected
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
New ***to_b*** method converts **strings**, **symbols**, **numbers** and **nil** values in a **boolean** value.

***to_b*** method is available on ***String***, ***Symbol***, ***Numeric***, ***TrueClass***, ***FalseClass*** and ***NilClass*** classes.

## String
Returns ***true*** if string is one of **t**, **true**, **on**, **y**, **yes** or **1** values. Returns ***false*** otherwise.
Ignores trailing spaces and letter cases.

~~~ruby
't'.to_b        # => true
'true'.to_b     # => true
'on'.to_b       # => true
'y'.to_b        # => true
'yes'.to_b      # => true
'1'.to_b        # => true

''.to_b         # => false
'0'.to_b        # => false
'2'.to_b        # => false
'-1'.to_b       # => false
'f'.to_b        # => false
'false'.to_b    # => false
'off'.to_b      # => false
'n'.to_b        # => false
'no'.to_b       # => false
'wherever'.to_b # => false
~~~

## Symbol
Same as ***symbol.to_s.to_b***.

~~~ruby
:'1'.to_b      # => true
:t.to_b        # => true
:true.to_b     # => true
:on.to_b       # => true
:y.to_b        # => true
:yes.to_b      # => true

:f.to_b        # => false
:false.to_b    # => false
:off.to_b      # => false
:n.to_b        # => false
:no.to_b       # => false
:wherever.to_b # => false
~~~

## Numeric
Returns ***false*** if number is **zero**. Returns ***true*** otherwise.

### Integer
~~~ruby
0.to_b  # => false
1.to_b  # => true
2.to_b  # => true
-1.to_b # => true
-2.to_b # => true
~~~

### Float
~~~ruby
0.0.to_b  # => false
0.1.to_b  # => true
1.0.to_b  # => true
-0.1.to_b # => true
-1.0.to_b # => true
~~~

### BigDecimal
~~~ruby
require 'bigdecimal'

BigDecimal('0.0').to_b  # => false
BigDecimal('0.1').to_b  # => true
BigDecimal('1.0').to_b  # => true
BigDecimal('-0.1').to_b # => true
BigDecimal('-1.0').to_b # => true
~~~

## NilClass
Returns ***false***.

~~~ruby
nil.to_b # => false
~~~

## TrueClass
Returns ***true***.

~~~ruby
true.to_b # => true
~~~

## FalseClass
Returns ***false***.

~~~ruby
false.to_b # => false
~~~


---Files--------------------------------
to_b_method.diff (9.63 KB)


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