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authorBjörn Gustavsson <[email protected]>2017-05-17 06:34:00 +0200
committerBjörn Gustavsson <[email protected]>2017-05-17 06:45:32 +0200
commit96d9a00223aaaf1df7698395be17157a836461ec (patch)
tree2e7a325b53e457cc3e53bfca9ccab7343bcc51b9 /system/doc
parentb8d4bd38e343488b5e8539f913650b150cab3ade (diff)
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Don't mention R12B
Diffstat (limited to 'system/doc')
-rw-r--r--system/doc/programming_examples/bit_syntax.xml14
1 files changed, 4 insertions, 10 deletions
diff --git a/system/doc/programming_examples/bit_syntax.xml b/system/doc/programming_examples/bit_syntax.xml
index 03645bba1b..98ad2808cf 100644
--- a/system/doc/programming_examples/bit_syntax.xml
+++ b/system/doc/programming_examples/bit_syntax.xml
@@ -47,7 +47,7 @@ Bin = <<E1, E2, ... En>>]]></code>
<<E1, E2, ... En>> = Bin ]]></code>
<p>Here, <c>Bin</c> is bound and the elements are bound or
unbound, as in any match.</p>
- <p>Since Erlang R12B, a Bin does not need to consist of a whole number of bytes.</p>
+ <p>A Bin does not need to consist of a whole number of bytes.</p>
<p>A <em>bitstring</em> is a sequence of zero or more bits, where
the number of bits does not need to be divisible by 8. If the number
@@ -184,7 +184,7 @@ end.]]></code>
<item>The unit size is given as <c>unit:IntegerLiteral</c>.
The allowed range is 1-256. It is multiplied by
the <c>Size</c> specifier to give the effective size of
- the segment. Since Erlang R12B, the unit size specifies the alignment
+ the segment. The unit size specifies the alignment
for binary segments without size.</item>
</taglist>
<p><em>Example:</em></p>
@@ -322,21 +322,15 @@ foo(<<A:8,Rest/bitstring>>) ->]]></code>
<section>
<title>Appending to a Binary</title>
- <p>Since Erlang R12B, the following function for creating a binary out of
- a list of triples of integers is efficient:</p>
+ <p>Appending to a binary in an efficient way can be done as follows:</p>
<code type="none"><![CDATA[
triples_to_bin(T) ->
triples_to_bin(T, <<>>).
triples_to_bin([{X,Y,Z} | T], Acc) ->
- triples_to_bin(T, <<Acc/binary,X:32,Y:32,Z:32>>); % inefficient before R12B
+ triples_to_bin(T, <<Acc/binary,X:32,Y:32,Z:32>>);
triples_to_bin([], Acc) ->
Acc.]]></code>
- <p>In previous releases, this function was highly inefficient, because
- the binary constructed so far (<c>Acc</c>) was copied in each recursion step.
- That is no longer the case. For more information, see
- <seealso marker="doc/efficiency_guide:introduction">
- Efficiency Guide</seealso>.</p>
</section>
</chapter>