Make dtype from string ctor accept const ref

f70cc112 · Ivan Smirnov · Wenzel Jakob · fb7c9fd3 · f70cc112
Commit f70cc112 authored Oct 22, 2016 by Ivan Smirnov Committed by Wenzel Jakob Oct 22, 2016
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include/pybind11/numpy.h
+1 -1

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--- a/include/pybind11/numpy.h
+++ b/include/pybind11/numpy.h
@@ -170,7 +170,7 @@ public:
        m_ptr = descr.strip_padding().release().ptr();
    }
-    explicit dtype(std::string format) {
+    explicit dtype(const std::string &format) {
        m_ptr = from_args(pybind11::str(format)).release().ptr();
    }