From b12afaa577e5f9b0c3bf922ec5c1ab15893c7378 Mon Sep 17 00:00:00 2001 From: Dave Gauer Date: Sun, 28 Feb 2021 13:23:22 -0500 Subject: Added ex 48, additional comment on 46 --- patches/patches/46_optionals2.patch | 19 ++++++++++++++++--- patches/patches/48_methods2.patch | 4 ++++ 2 files changed, 20 insertions(+), 3 deletions(-) create mode 100644 patches/patches/48_methods2.patch (limited to 'patches') diff --git a/patches/patches/46_optionals2.patch b/patches/patches/46_optionals2.patch index 5becede..10705d9 100644 --- a/patches/patches/46_optionals2.patch +++ b/patches/patches/46_optionals2.patch @@ -1,8 +1,21 @@ -12c12 -< tail: *Elephant = null, // <---- make this optional! +8,19d7 +< // We also introduce the handy ".?" shortcut: +< // +< // const foo = bar.?; +< // +< // is the same as +< // +< // const foo = bar orelse unreachable; +< // +< // See if you can find where we use this shortcut below. +< // +< // Now let's make those elephant tails optional! +< // +24c12 +< tail: *Elephant = null, // Hmm... tail needs something... --- > tail: ?*Elephant = null, // <---- make this optional! -42c42 +54c42 < if (e.tail == null) ???; --- > if (e.tail == null) break; diff --git a/patches/patches/48_methods2.patch b/patches/patches/48_methods2.patch new file mode 100644 index 0000000..781a99e --- /dev/null +++ b/patches/patches/48_methods2.patch @@ -0,0 +1,4 @@ +57c57 +< e = e.???; // Which method do we want here? +--- +> e = e.getTail(); // Which method do we want here? -- cgit v1.2.3-ZIG