📝 add example for contains #2133

Closes #2133.
2020-05-26 12:46:04 +02:00 · 2020-05-26 12:46:04 +02:00 · 27fe50dc92
commit 27fe50dc92
parent 25aab7ee41
1 changed files with 5 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -544,6 +544,11 @@ for (auto& [key, value] : o.items()) {
 }

 // find an entry
+if (o.contains("foo")) {
+  // there is an entry with key "foo"
+}
+
+// or via find and an iterator
 if (o.find("foo") != o.end()) {
  // there is an entry with key "foo"
 }