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Update seqs.md

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Flaviu Tamas 2014-11-30 17:04:03 -05:00
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@ -24,9 +24,9 @@ b = a[0] & b # Same as original b
``` ```
## Value semantics ## Immutability
Seqs have value semantics, so While sequences are dynamiclly allocated, they are still immutable.
``` nimrod ``` nimrod
let a = @[1, 2, 3] let a = @[1, 2, 3]
@ -40,7 +40,7 @@ var b = @[1, 2, 3]
b.add(4) b.add(4)
``` ```
will work without any problems. If wanted, a seq can be passed to a method with the `var` annotation to make it modifiable, so will work without any problems. If wanted, a seq can be passed to a method with the `var` or `ref` annotation to make it modifiable, so
``` nimrod ``` nimrod
proc foo(mySeq: var seq[int]) = proc foo(mySeq: var seq[int]) =