atch (matcha/has-entry-that :a (matcha/= 1)) {:a 2}) ; =&gt; fails</pre></div></div><div class="public anchor" id="var-has-key"><h3>has-key</h3><div class="usage"><code>(has-key v)</code></div><div class="doc"><pre class="plaintext">passes if the map received contains the given key

(matcha/run-match (matcha/has-key :a) {:a 1}) ; =&gt; passes
(matcha/run-match (matcha/has-key :z) {:a 1}) ; =&gt; fails</pre></div></div><div class="public anchor" id="var-has-nth"><h3>has-nth</h3><div class="usage"><code>(has-