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| author | Ulf Hermann <ulf.hermann@qt.io> | 2016-08-19 12:22:31 +0200 |
|---|---|---|
| committer | Ulf Hermann <ulf.hermann@qt.io> | 2016-09-15 16:01:02 +0000 |
| commit | 6b3845320a9242481842243f2c019aa11ce396df (patch) | |
| tree | b95d4ddb7a1db25cf38a41197462d6cd31db3bc4 /src/corelib/tools/qlocale.qdoc | |
| parent | 446afc10451d5097d7bd20b1b8d20325c4d54fa5 (diff) | |
QLocale: Add option to pad numbers with trailing zeroes
EcmaScript mandates that number-to-string functions pad the resulting
strings with zeroes, up to the requested precision. QLocale actually
supports this, under the disguise of the "Alternate" flag, used by
QString::asprintf().
We split this flag into the three options it actually represents and
make IncludeTrailingZeroesAfterDot available as a NumberOption. This
allows us to generate numbers in an EcmaScript compliant way.
In addition, a symmetrical option to reject trailing zeroes when
parsing strings to numbers is added.
[ChangeLog][QtCore][QLocale] Additional flags in QLocale::NumberOption
allow generating strings from doubles in accordance to EcmaScript's
Number.toPrecision(n).
Change-Id: If1090d5a0364a29811011a472afc8b75d0af0a8f
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/tools/qlocale.qdoc')
| -rw-r--r-- | src/corelib/tools/qlocale.qdoc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/corelib/tools/qlocale.qdoc b/src/corelib/tools/qlocale.qdoc index f4b49095df..88b071e161 100644 --- a/src/corelib/tools/qlocale.qdoc +++ b/src/corelib/tools/qlocale.qdoc @@ -969,7 +969,8 @@ setNumberOptions(). \value DefaultNumberOptions This option represents the default behavior, with - group separators and with one leading zero in single digit exponents. + group separators, with one leading zero in single digit exponents, and + without trailing zeroes after the decimal dot. \value OmitGroupSeparator If this option is set, the number-to-string functions will not insert group separators in their return values. The default is to insert group separators. @@ -984,6 +985,14 @@ functions will fail if they encounter an exponent padded with zeroes when parsing a floating point number in scientific notation. The default is to accept such padding. + \value IncludeTrailingZeroesAfterDot If this option is set, the number-to-string + functions will pad numbers with zeroes to the requested precision in "g" + or "most concise" mode, even if the number of significant digits is lower + than the requested precision. The default is to omit trailing zeroes. + \value RejectTrailingZeroesAfterDot If this option is set, the string-to-number + functions will fail if they encounter trailing zeroes after the decimal + dot when parsing a number in scientific or decimal representation. The + default is to accept trailing zeroes. \sa setNumberOptions(), numberOptions() */ |