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Fix vector indexing notation, remove reference to 'slices'.

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This commit is contained in:
Graydon Hoare 2011-09-14 14:13:47 -07:00
parent 7c782c10df
commit c61f06fde9
1 changed files with 4 additions and 22 deletions
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26
doc/rust.texi
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@ -2399,15 +2399,11 @@ The vector type-constructor represents a homogeneous array of values of a
given type. A vector has a fixed size. The kind of a vector type depends on
the kind of its member type, as with other simple structural types.
Vectors can be sliced. A slice expression builds a new vector by copying a
contiguous range -- given by a pair of indices representing a half-open
interval -- out of the sliced vector.
An example of a vector type and its use:
@example
let v: [int] = [7, 5, 3];
let i: int = v.(2);
let v2: [int] = v.(0,1); // Form a slice.
let i: int = v[2];
assert (i == 3);
@end example
Vectors always @emph{allocate} a storage region sufficient to store the first
@ -3368,26 +3364,12 @@ A @code{cont} expression is only permitted in the body of a loop.
A @dfn{for loop} is controlled by a vector or string. The for loop
bounds-checks the underlying sequence @emph{once} when initiating the loop,
then repeatedly copies each value of the underlying sequence into the element
variable, executing the loop body once per copy. To perform a for loop on a
sub-range of a vector or string, form a temporary slice over the sub-range and
run the loop over the slice.
variable, executing the loop body once per copy.
Example of 4 for loops, all identical:
Example a for loop:
@example
let v: [foo] = [a, b, c];
for (foo e in v.(0, vec::len(v))) @{
bar(e);
@}
for (foo e in v.(0,)) @{
bar(e);
@}
for (foo e in v.(,)) @{
bar(e);
@}
for (foo e in v) @{
bar(e);
@}