examples from the talk part of test suite

examples/talk/hoisting.nim

@@ -0,0 +1,23 @@
+type
+  Regex = distinct string
+
+const maxSubpatterns = 10
+
+proc re(x: string): Regex =
+  result = Regex(x)
+
+proc match(s: string, pattern: Regex, captures: var openArray[string]): bool =
+  true
+
+template optRe{re(x)}(x: string{lit}): Regex =
+  var g {.global.} = re(x)
+  g
+
+template `=~`(s: string, pattern: Regex): bool =
+  when not definedInScope(matches):
+    var matches {.inject.}: array[maxSubPatterns, string]
+  match(s, pattern, matches)
+
+for line in lines("input.txt"):
+  if line =~ re"(\w+)=(\w+)":
+    echo "key-value pair; key: ", matches[0], " value: ", matches[1]