NumUtils class
Properties
-
hashCode
→ int
-
The hash code for this object.
no setterinherited
-
runtimeType
→ Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
addDec(num a, num b)
→ Decimal?
-
加 (精确相加,防止精度丢失).
add (without loosing precision).
-
addDecString(String a, String b)
→ Decimal?
-
两个数相加（防止精度丢失）
-
addNum(num a, num b)
→ double
-
add (without loosing precision).
两个数相加（防止精度丢失）
-
divideDec(num a, num b)
→ Decimal?
-
除 (精确相除,防止精度丢失).
divide (without loosing precision).
-
divideDecString(String a, String b)
→ Decimal?
-
除
-
divideNum(num a, num b)
→ double
-
divide (without loosing precision).
两个数相除（防止精度丢失）
-
getDoubleByValueString(String valueStr, {double defValue = 0})
→ double
-
get double by value str.
数字字符串转double
-
getIntByValueString(String valueStr, {int defValue = 0})
→ int
-
get int by value string
将数字字符串转int
-
getNumByValueDouble(double? value, int fractionDigits)
→ num?
-
浮点数字保留x位小数
-
getNumByValueString(String valueStr, {int? fractionDigits})
→ num?
-
将数字字符串转num，数字保留x位小数
-
greaterOrEqual(num a, num b)
→ bool
-
Relational greater than or equal operator.
-
greaterOrEqualDecString(String a, String b)
→ bool
-
Relational greater than or equal operator.
-
greaterThan(num a, num b)
→ bool
-
Relational greater than operator.
关系大于运算符。判断a是否大于b
-
greaterThanDecString(String a, String b)
→ bool
-
Relational greater than operator.
判断a是否大于b
-
isEqual(num a, num b)
→ bool
-
Checks if num a EQUAL than num b.
检查num a是否等于num b。
-
isGreaterThan(num a, num b)
→ bool
-
Checks if num a GREATER than num b.
检查num a是否大于num b。
-
isLowerThan(num a, num b)
→ bool
-
Checks if num a LOWER than num b.
检查num a是否小于num b。
-
isNum(String s)
→ bool
-
Checks if string is int or double.
检查字符串是int还是double
-
isZero(num? value)
→ bool
-
isZero
判断是否是否是0
-
lessThan(num a, num b)
→ bool
-
Relational less than operator.
关系小于运算符。判断a是否小于b
-
lessThanDecString(String a, String b)
→ bool
-
Relational less than operator.
判断a是否小于b
-
multiplyDec(num a, num b)
→ Decimal?
-
乘 (精确相乘,防止精度丢失).
multiply (without loosing precision).
-
multiplyDecString(String a, String b)
→ Decimal?
-
乘
-
multiplyNum(num a, num b)
→ double
-
multiply (without loosing precision).
两个数相乘（防止精度丢失）
-
noSuchMethod(Invocation invocation)
→ dynamic
-
Invoked when a nonexistent method or property is accessed.
inherited
-
remainder(num a, num b)
→ Decimal?
-
余数
-
remainderDecString(String a, String b)
→ Decimal?
-
余数
-
subtractDec(num a, num b)
→ Decimal?
-
减 (精确相减,防止精度丢失).
subtract (without loosing precision).
-
subtractDecString(String a, String b)
→ Decimal?
-
减
-
subtractNum(num a, num b)
→ double
-
subtract (without loosing precision).
两个数相减（防止精度丢失）
-
thanOrEqual(num a, num b)
→ bool
-
Relational less than or equal operator.
关系小于或等于运算符。判断a是否小于或者等于b
-
thanOrEqualDecString(String a, String b)
→ bool
-
Relational less than or equal operator.
判断a是否小于或者等于b
-
toString()
→ String
-
A string representation of this object.
inherited
