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-rw-r--r--system/doc/efficiency_guide/introduction.xml8
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diff --git a/system/doc/efficiency_guide/introduction.xml b/system/doc/efficiency_guide/introduction.xml
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+++ b/system/doc/efficiency_guide/introduction.xml
@@ -46,14 +46,6 @@
to find out where the performance bottlenecks are and optimize only the
bottlenecks. Let other code stay as clean as possible.</p>
- <p>Fortunately, compiler and runtime optimizations introduced in
- Erlang/OTP R12B makes it easier to write code that is both clean and
- efficient. For example, the ugly workarounds needed in R11B and earlier
- releases to get the most speed out of binary pattern matching are
- no longer necessary. In fact, the ugly code is slower
- than the clean code (because the clean code has become faster, not
- because the uglier code has become slower).</p>
-
<p>This Efficiency Guide cannot really teach you how to write efficient
code. It can give you a few pointers about what to avoid and what to use,
and some understanding of how certain language features are implemented.