Local variable: Difference between revisions

Revision as of 11:01, 22 February 2020

Revision as of 04:07, 7 March 2020

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This happens since the global variable $a is modified to a new ''temporary'' (local) meaning inside {{code|f()}}, but the global value is restored upon leaving the scope of {{code|f()}}.

Using <code>my</code> in this case instead of <code>local</code> would have printed 1 three times since in that case the <code>$a</code> variable would be limited to the static scope of the function {{code|f()}} and not seen by {{code|g()}}.<br /> Randal L. Schwartz and Tom Phoenix argue that the operator <code>local</code> should have had a different name like <code>save</code>.<ref>{{cite book|author=Randal L. Schwartz and Tom Phoenix|title=Learning Perl 3rd edition|at=[https://archive.org/details/learningperl00schw/page/ paragraph 4.7]|publisher=O'REILLY|date=2001-07-01|ISBN=0-596-00132-0|url=https://archive.org/details/learningperl00schw/page/}}</ref>

==Local variables in Ruby==