added basic example

example/Jamfile.v2

@@ -11,7 +11,5 @@ project
       <cxxstd>11
     ;
 
-exe genome
-    : genome.cpp
-    : <cxxstd>17
-    ;
+exe basic : basic.cpp ;
+exe genome : genome.cpp : <cxxstd>17 ;

example/basic.cpp

@@ -0,0 +1,44 @@
+/* Basic example of use of Boost.Bloom.
+ * 
+ * Copyright 2025 Joaquin M Lopez Munoz.
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * See https://www.boost.org/libs/bloom for library home page.
+ */
+
+#include <boost/bloom/filter.hpp>
+#include <cassert>
+#include <iostream>
+#include <string>
+
+int main()
+{
+  /* Bloom filter of strings with 5 bits set per insertion */
+
+  using filter = boost::bloom::filter<std::string, 5>;
+
+  /* create filter with a capacity of 1,000,000 bits */
+
+  filter f(1000000);
+
+  /* insert elements in the set */
+
+  f.insert("hello");
+  f.insert("Boost");
+
+  /* elements inserted are always correctly checked as such */
+
+  assert(f.may_contain("hello") == true);
+
+  /* Elements not inserted may incorrectly be identified as such with a
+   * false probability rate (FPR) which is a function of the array capacity,
+   * the number of bits set per element and generally how the
+   * boost::bloom::filter was configured.
+   */
+
+  if(f.may_contain("bye")) { /* likely false */
+    std::cout << "false positive\n";
+  }
+}