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bin/gems/facets-3.1.0/demo/core/integer/bitmask.md

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+## Integer#bit
+
+    require 'facets/integer/bitmask'
+
+    0.bit(0).assert == 1
+    0.bit(1).assert == 2
+    0.bit(2).assert == 4
+    0.bit(3).assert == 8
+
+Negate
+
+    1.bit(~0).assert == 0
+    2.bit(~1).assert == 0
+    4.bit(~2).assert == 0
+    8.bit(~3).assert == 0
+
+## Integer#bit?
+
+    a = 8
+    assert(! a.bit?(0))
+    assert(! a.bit?(1))
+    assert(! a.bit?(2))
+    assert(  a.bit?(3))
+    assert(! a.bit?(4))
+    assert(! a.bit?(5))
+
+## Integer#bit_clear
+
+    1.bit_clear(0).assert == 0
+    2.bit_clear(1).assert == 0
+    4.bit_clear(2).assert == 0
+    8.bit_clear(3).assert == 0
+
+## Integer#bitmask
+
+    a =  1
+    m = Bit(4)
+    a = a.bitmask(m)
+    a.assert == 17
+    assert( a.bitmask?(m) )
+
+## Kernel#Bit
+
+    n = Bit(4)
+    n.assert == 16
+

bin/gems/facets-3.1.0/demo/core/integer/factorial.md

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+## Integer#factorial
+
+    require 'facets/integer/factorial'
+
+    0.factorial.assert == 1
+    1.factorial.assert == 1
+    2.factorial.assert == 2
+    3.factorial.assert == 6
+    4.factorial.assert == 24
+

bin/gems/facets-3.1.0/demo/core/integer/length.md

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+## Numeric#length
+
+    require 'facets/numeric/length'
+
+    10.length.assert == 10
+    10.0.length.assert == 10
+

bin/gems/facets-3.1.0/demo/core/integer/multiple.md

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+## Integer#multiple?
+
+    require 'facets/integer/multiple'
+
+Is a number an even multiple of another?
+
+    1.multiple?(2)  #=> false
+    5.multiple?(3)  #=> false
+
+    2.multiple?(2)  #=> true
+    6.multiple?(3)  #=> true
+

bin/gems/facets-3.1.0/demo/core/integer/of.md

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+## Integer#of
+
+    require 'facets/integer/of'
+
+Similar to `Enumerable#map` and `Enumerable#collect` but for a number
+of times.
+
+    a = 4
+    b = a.of{ |i| i*2 }
+    b.assert == [0,2,4,6]
+

bin/gems/facets-3.1.0/demo/core/integer/ordinal.md

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+## Integer#ordinal
+
+    require 'facets/integer/ordinal'
+
+Produce the ordinal name of a number.
+
+    1.ordinal.assert == '1st'
+    2.ordinal.assert == '2nd'
+    3.ordinal.assert == '3rd'
+    4.ordinal.assert == '4th'
+

bin/gems/facets-3.1.0/demo/core/integer/times_collect.md

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+## Integer#times_collect
+
+    require 'facets/integer/of'
+
+    a = 4
+    b = a.times_collect{ |i| i*2 }
+    b.assert == [0,2,4,6]
+
+See `Integer#of` which is an alias.