Damian Conway writes:
: "Bryan C. Warnock" wrote:
: >
: > No examples are given, but are we to assume that this:
: >
: > for ($x = 0; $x < 100; $x++) {
: > ...
: > }
: >
: > becomes this:
: >
: > loop $x=0; $x < 100; $x++ {
: > ...
: > }
:
: Yes.
:
:
: > How would you use an $x lexically scoped to the loop block?
:
: You can't...directly. Nor can a C<while> or C<if>. The new rule is that
: to be lexical to a block it has to be declared in the block, or in the
: block's parameter list.
:
: You'd need to use another layer of braces:
:
: do {
: loop my $x=0; $x < 100; $x++ {
: ...
: }
: }
In this case, you can get a lexical declarationjust say
for 0...100 -> $x {
...
}
since C<< -> $x >> is considered similar to C<sub ($x)>, which is
the only other way to declare a "my" variable outside its block. (In
either case, the lexical defaults to read-only within the block.)
Note the ... there, borrowed from Ruby to mean "leave out the endpoint".
Larry
