スライドを作成

1 files changed, 62 insertions, 0 deletions

diff --git a/catchline.php b/catchline.php
new file mode 100644
index 0000000..058abeb
--- /dev/null
+++ b/catchline.php
@@ -0,0 +1,62 @@
+<?php
+try {
+  f(3);
+} catch (Throwable $e) {
+  while ($e = $e->getPrevious()) printf('%c', $e->getLine() + 23);
+  echo "\n";
+}
+function f(int $i) {
+  if ($i < 0) f();
+  try {
+    match ($i) {
+      0 => X, // 12行目
+
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+      2 => X, // 49行目
+
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+      1, 3 => X, // 57行目
+    };
+  } finally {
+    f($i - 1);
+  }
+}