Iterate array using range

Question

This is what I want to do

a = [1, 2, 3, 4]
a[1] = 0
a[2] = 0

one way to do this is to loop

(1..2).each { |x| x = 0 }

is there a way to do this somehow with ranges or splats? something like

a[(1..2)] = 0

taiansu · Accepted Answer · 2011-09-29 17:04:35Z

5

a = [1, 2, 3, 4]
a[1..2] = [0] * 2
p a #[1, 0, 0, 4]

You can't just type a[1..2] = 0 at line 2, cause the array a will become [1, 0, 4]

answered Sep 29, 2011 at 16:57

taiansu

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1 Comment

a[1..2] = 0, 0, a[1,2] = 0,0, a[1..2] = *[0,0]

oers · Accepted Answer · 2012-01-16 07:23:30Z

2

Or, with Array#fill

a.fill(0, 1..2)

oers

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answered Jan 16, 2012 at 7:11

chrisun

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derp · Accepted Answer · 2011-09-29 17:23:47Z

1

With range

ary = [1, 2, 3, 4]
ary[1..2] = [0,0]

Using [start, length]

a = [1,2,3,4]
a[1,2] = [0,0]

answered Sep 29, 2011 at 17:23

derp

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