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https://issues.apache.org/jira/browse/ARROW-1623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16345814#comment-16345814
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ASF GitHub Bot commented on ARROW-1623:
---------------------------------------
wesm commented on a change in pull request #1518: ARROW-1623: [C++] Add
convenience method to construct Buffer from a string that owns its memory
URL: https://github.com/apache/arrow/pull/1518#discussion_r164878557
##########
File path: cpp/src/arrow/buffer-test.cc
##########
@@ -52,6 +52,22 @@ TEST(TestBuffer, FromStdString) {
ASSERT_EQ(static_cast<int64_t>(val.size()), buf.size());
}
+TEST(TestBuffer, FromStdStringWithMemory) {
+ std::string* val = new std::string("hello, world");
+ std::shared_ptr<Buffer> buf;
+ std::string expected("hello, world");
+
+ ASSERT_OK(Buffer::FromString(*val, default_memory_pool(), &buf));
+
+ ASSERT_EQ(0, memcmp(buf->data(), val->c_str(), val->size()));
+ ASSERT_EQ(static_cast<int64_t>(val->size()), buf->size());
+
+ delete val;
Review comment:
Note we do not use `new` and `delete` in this codebase except in rare
situations (we have to use `new` to initialize `std::unique_ptr` because we do
not yet have `std::make_unique`).
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> [C++] Add convenience method to construct Buffer from a string that owns its
> memory
> -----------------------------------------------------------------------------------
>
> Key: ARROW-1623
> URL: https://issues.apache.org/jira/browse/ARROW-1623
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Panchen Xue
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
> The memory would need to be allocated from a memory pool / buffer allocator
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