From Jason Turner

[expr.comma]

C++14 → C++17 2.1 KB 37 lines
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tmp/tmp8me1s_tb/{from.md → to.md} RENAMED
@@ -7,26 +7,32 @@ expression:
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  assignment-expression
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  expression ',' assignment-expression
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  ```
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  A pair of expressions separated by a comma is evaluated left-to-right;
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- the left expression is a discarded-value expression (Clause 
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- [[expr]]).[^27] Every value computation and side effect associated with
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- the left expression is sequenced before every value computation and side
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- effect associated with the right expression. The type and value of the
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- result are the type and value of the right operand; the result is of the
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- same value category as its right operand, and is a bit-field if its
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- right operand is a glvalue and a bit-field. If the value of the right
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- operand is a temporary ([[class.temporary]]), the result is that
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- temporary.
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-
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- In contexts where comma is given a special meaning, in lists of
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- arguments to functions ([[expr.call]]) and lists of initializers (
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- [[dcl.init]]) the comma operator as described in Clause  [[expr]] can
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- appear only in parentheses.
 
 
 
 
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  ``` cpp
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  f(a, (t=3, t+2), c);
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  ```
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  has three arguments, the second of which has the value `5`.
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  assignment-expression
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  expression ',' assignment-expression
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  ```
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  A pair of expressions separated by a comma is evaluated left-to-right;
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+ the left expression is a discarded-value expression (Clause  [[expr]]).
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+ Every value computation and side effect associated with the left
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+ expression is sequenced before every value computation and side effect
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+ associated with the right expression. The type and value of the result
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+ are the type and value of the right operand; the result is of the same
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+ value category as its right operand, and is a bit-field if its right
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+ operand is a bit-field. If the right operand is a temporary expression (
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+ [[class.temporary]]), the result is a temporary expression.
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+
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+ In contexts where comma is given a special meaning,
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+
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+ [*Example 1*: in lists of arguments to functions ([[expr.call]]) and
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+ lists of initializers ([[dcl.init]]) — *end example*]
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+
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+ the comma operator as described in Clause  [[expr]] can appear only in
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+ parentheses.
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+
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+ [*Example 2*:
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  ``` cpp
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  f(a, (t=3, t+2), c);
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  ```
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  has three arguments, the second of which has the value `5`.
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+ — *end example*]
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+