abstract struct Int
Overview
Int is the base type of all integer types.
There are four signed integer types: Int8
, Int16
, Int32
and Int64
,
being able to represent numbers of 8, 16, 32 and 64 bits respectively.
There are four unsigned integer types: UInt8
, UInt16
, UInt32
and UInt64
.
An integer literal is an optional +
or -
sign, followed by
a sequence of digits and underscores, optionally followed by a suffix.
If no suffix is present, the literal's type is the lowest between Int32
, Int64
and UInt64
in which the number fits:
1 # Int32
1_i8 # Int8
1_i16 # Int16
1_i32 # Int32
1_i64 # Int64
1_u8 # UInt8
1_u16 # UInt16
1_u32 # UInt32
1_u64 # UInt64
+10 # Int32
-20 # Int32
2147483648 # Int64
9223372036854775808 # UInt64
The underscore _
before the suffix is optional.
Underscores can be used to make some numbers more readable:
1_000_000 # better than 1000000
Binary numbers start with 0b
:
0b1101 # == 13
Octal numbers start with 0o
:
0o123 # == 83
Hexadecimal numbers start with 0x
:
0xFE012D # == 16646445
0xfe012d # == 16646445
Included Modules
- Comparable(BigDecimal)
- Comparable(BigRational)
- Comparable(BigInt)
Defined in:
crystal_on_steroids/inflections.crcrystal_on_steroids/int.cr
Instance Method Summary
-
#multiple_of?(number)
Check whether the integer is evenly divisible by the argument.
-
#ordinal
Returns the suffix that should be added to a number to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.
-
#ordinalize
Turns a number into an ordinal string used to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.
Instance methods inherited from struct Number
blank?
blank?,
byte(*args)
byte,
bytes
bytes,
exabyte(*args)
exabyte,
exabytes
exabytes,
gigabyte(*args)
gigabyte,
gigabytes
gigabytes,
kilobyte(*args)
kilobyte,
kilobytes
kilobytes,
megabyte(*args)
megabyte,
megabytes
megabytes,
petabyte(*args)
petabyte,
petabytes
petabytes,
terabyte(*args)
terabyte,
terabytes
terabytes
Instance methods inherited from class Object
in?(another_object)
in?,
presence
presence,
presence_in(another_object)
presence_in,
present?
present?,
to_param
to_param,
to_query(namespace)to_query to_query
Class methods inherited from class Object
❨╯°□°❩╯︵┻━┻
❨╯°□°❩╯︵┻━┻
Instance Method Detail
Check whether the integer is evenly divisible by the argument.
0.multiple_of?(0) # => true
6.multiple_of?(5) # => false
10.multiple_of?(2) # => true
Returns the suffix that should be added to a number to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.
1.ordinal # => "st"
2.ordinal # => "nd"
1002.ordinal # => "nd"
1003.ordinal # => "rd"
-11.ordinal # => "th"
-1021.ordinal # => "st"
Turns a number into an ordinal string used to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.
1.ordinalize # => "1st"
2.ordinalize # => "2nd"
1002.ordinalize # => "1002nd"
1003.ordinalize # => "1003rd"
-11.ordinalize # => "-11th"
-1021.ordinalize # => "-1021st"