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map delete

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SVN=128258
This commit is contained in:
Rob Pike 2008-07-21 16:18:04 -07:00
parent 820f223af9
commit 777ee7163b
1 changed files with 6 additions and 0 deletions
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6
doc/go_lang.txt
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@ -1609,6 +1609,12 @@ the value is assigned and the second, boolean variable is set to true. Otherwise
the variable is unchanged, and the boolean value is set to false.
value, present = map_var[key]
To delete a value from a map, use a tuple assignment with the map on the left
and a false boolean expression as the second expression on the right, such
as:
map_var[key] = value, false
In assignments, the type of the expression must match the type of the left-hand side.