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📝 add example for contains #2133

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Closes #2133.
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Niels Lohmann
2020-05-26 12:46:04 +02:00
parent 25aab7ee41
commit 27fe50dc92
1 changed files with 5 additions and 0 deletions
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README.md
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@@ -544,6 +544,11 @@ for (auto& [key, value] : o.items()) {
} }
// find an entry // 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()) { if (o.find("foo") != o.end()) {
// there is an entry with key "foo" // there is an entry with key "foo"
} }