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[Format] add variable width support (#1743)

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* add variable width test cases

* add variable width support

* update the documentation for variable width
This commit is contained in:
was4444
2017-07-24 18:21:35 +08:00
committed by Aleksandar Fabijanic
parent fd1d113acb
commit 303e398803
3 changed files with 119 additions and 11 deletions
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4
Foundation/include/Poco/Format.h
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@@ -82,11 +82,11 @@ std::string Foundation_API format(const std::string& fmt, const Any& value);
/// * h argument is short (d, i), unsigned short (o, u, x, X) or float (e, E, f, g, G)
/// * ? argument is any signed or unsigned int, short, long, or 64-bit integer (d, i, o, x, X)
///
/// The width argument is a nonnegative decimal integer controlling the minimum number of characters printed.
/// The width argument is a nonnegative decimal integer or '*' with an additional nonnegative integer value preceding the value to be formated, controlling the minimum number of characters printed.
/// If the number of characters in the output value is less than the specified width, blanks or
/// leading zeros are added, according to the specified flags (-, +, 0).
///
/// Precision is a nonnegative decimal integer, preceded by a period (.), which specifies the number of characters
/// Precision is a nonnegative decimal integer or '*' with an additional nonnegative integer value preceding the value to be formated, preceded by a period (.), which specifies the number of characters
/// to be printed, the number of decimal places, or the number of significant digits.
///
/// Throws an InvalidArgumentException if an argument index is out of range.