Merge commit 'b52fb5234cd7c11ecfae51897a6f7fa52e8777fc' into clippyup

1 files changed, 24 insertions, 0 deletions

diff --git a/src/docs/slow_vector_initialization.txt b/src/docs/slow_vector_initialization.txt
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+### What it does
+Checks slow zero-filled vector initialization
+
+### Why is this bad?
+These structures are non-idiomatic and less efficient than simply using
+`vec![0; len]`.
+
+### Example
+```
+let mut vec1 = Vec::with_capacity(len);
+vec1.resize(len, 0);
+
+let mut vec1 = Vec::with_capacity(len);
+vec1.resize(vec1.capacity(), 0);
+
+let mut vec2 = Vec::with_capacity(len);
+vec2.extend(repeat(0).take(len));
+```
+
+Use instead:
+```
+let mut vec1 = vec![0; len];
+let mut vec2 = vec![0; len];
+```
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