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Add some notes about String::isNull() and String::null.

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This commit is contained in:
Tsuda Kageyu 2015-11-17 11:41:13 +09:00
parent 1a942627bf
commit 6b7a2c4cf7
1 changed files with 6 additions and 1 deletions
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7
taglib/toolkit/tstring.h
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@ -332,7 +332,9 @@ namespace TagLib {
* Returns true if this string is null -- i.e. it is a copy of the
* String::null string.
*
* \note A string can be empty and not null.
* \note A string can be empty and not null. So do not use this method to
* check if the string is empty.
*
* \see isEmpty()
*/
bool isNull() const;
@ -508,6 +510,9 @@ namespace TagLib {
/*!
* A null string provided for convenience.
*
* \warning Do not modify this variable. It will mess up the internal state
* of TagLib.
*/
static String null;