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authorVincent Ambo <mail@tazj.in>2020-07-15T07·20+0100
committerVincent Ambo <mail@tazj.in>2020-07-15T07·23+0100
commit1213b086a1015a662ab7ebd658f784534fd3116a (patch)
treed3bc8f3b7f40b8b60f0ef6fbd649cf765f4fdfb6 /third_party/immer/example/vector/iota-transient-std.cpp
parent1390827b9ea1e04bc9863e48930bfd16db3b716e (diff)
parent7f19d641647ac4ef313ed88d6b5c140983ce5436 (diff)
merge(3p/immer): Subtree merge at 'ad3e3556d' as 'third_party/immer' r/1299
Change-Id: I9636a41ad44b4218293833fd3e9456d9b07c731b
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diff --git a/third_party/immer/example/vector/iota-transient-std.cpp b/third_party/immer/example/vector/iota-transient-std.cpp
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+//
+// immer: immutable data structures for C++
+// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
+//
+// This software is distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
+//
+
+#include <immer/vector.hpp>
+#include <immer/vector_transient.hpp>
+
+#include <algorithm>
+#include <iostream>
+
+// include:myiota/start
+immer::vector<int> myiota(immer::vector<int> v, int first, int last)
+{
+    auto t = v.transient();
+    std::generate_n(
+        std::back_inserter(t), last - first, [&] { return first++; });
+    return t.persistent();
+}
+// include:myiota/end
+
+int main()
+{
+    auto v = myiota({}, 0, 100);
+    std::copy(v.begin(), v.end(), std::ostream_iterator<int>{std::cout, "\n"});
+}