https://sourceforge.net/p/asil/wiki/keywords-readonly/Recent changes to keywords-readonlyenThu, 20 Feb 2014 18:58:02 -0000https://sourceforge.net/p/asil/wiki/keywords-readonly/<div class="markdown_content"><p>Marks a <strong><a class="" href="/p/asil/wiki/keywords-var/">var</a></strong> or <strong><a class="" href="../keywords-typealias">typealias</a></strong> as read only. Anything <strong>readonly</strong> can be initialized, but then never changed again as long as they remain in scope. If the item is a reference type, <strong>readonly</strong> only has an effect on the <u>outermost</u> reference whereas <strong><a class="" href="/p/asil/wiki/keywords-const/">const</a></strong> would only have an effect on what the reference <u>points</u> to. If the item is a by-value type, <strong>readonly</strong> is the same as <strong><a class="" href="/p/asil/wiki/keywords-const/">const</a></strong> when combined with <strong><a class="" href="../keywords">var</a></strong>. Variables of type <strong><a class="" href="/p/asil/wiki/keywords-expression/">expression</a></strong> can't be made <strong>readonly</strong>.</p> <h2 id="variables">Variables</h2> <div class="codehilite"><pre>\var\ [\readonly\] [\const\] [(\ref\ | \byvalue\)] /TypeDescriptor/ /identifier/ [\=\ /Value/] </pre></div> <p>For more on what /TypeDescriptor/ can be, see <a class="" href="../Appendices-Terms-Type%20descriptors">Type descriptors</a>.</p> <h2 id="type-aliases">Type aliases</h2> <div class="codehilite"><pre>\typealias\ [\readonly\] [\const\] [(\ref\ | \byvalue\)] /TypeDescriptor/ /identifier/ </pre></div> </div>Will PittengerThu, 20 Feb 2014 18:58:02 -0000https://sourceforge.netb36976c210844d83f8a74621e96ecd2f10c674fc