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go
golang
Commits
ae13f438
Commit
ae13f438
authored
Jan 13, 2010
by
Ian Lance Taylor
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Clarify when expressions are evaluated for a range clause.
R=gri, rsc CC=golang-dev
https://golang.org/cl/189057
parent
14a74378
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ae13f438
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@@ -3783,7 +3783,12 @@ string or array element or map value.
The types of the array or slice index (always
<code>
int
</code>
)
and element, or of the map key and value respectively,
must be
<a
href=
"#Assignment_compatibility"
>
assignment compatible
</a>
with
the type of the iteration variables.
the type of the iteration variables. The expression on the right hand
side is evaluated once before beginning the loop. At each iteration
of the loop, the values produced by the range clause are assigned to
the left hand side as in an
<a
href=
"#Assignments"
>
assignment
statement
</a>
. Function calls on the left hand side will be evaluated
exactly once per iteration.
</p>
<p>
For strings, the "range" clause iterates over the Unicode code points
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