org.jquantlib.util

Class Std

java.lang.Object

org.jquantlib.util.Std

public class Std
extends java.lang.Object

This class contains utility methods similar to C++ std functions

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Std.BinaryOperator<T extends java.lang.Number>
class	Std.Bind2nd<T extends java.lang.Number>
class	Std.Operator<T extends java.lang.Number>
static class	Std.OpType
class	Std.Plus<T extends java.lang.Number>
class	Std.UninaryOperator<T extends java.lang.Number>

Constructor Summary

Constructors

Constructor and Description
Std()

Method Summary

Modifier and Type	Method and Description
static <T> int	copy(java.util.List<T> from, int first, int last, java.util.List<T> to) std:copy: Copy range of elements Copies the elements in the range [first,last) into a range beginning at result.
static <T> int	copy(java.util.List<T> from, int first, int last, java.util.List<T> to, int toFrom)
static <T> int	distance(java.util.List<T> values, int first, int last) This method is equivalent to C++ std:distance function Return distance between indices (or iterators) Calculates the number of elements between first and last.
static <T> boolean	equal(java.util.List<T> first, int from, int last, java.util.List<T> second, int secondFrom) Test whether the elements in two ranges are equal Compares the elements in the range [first1,last1) with those in the range beginning at first2, and returns true if the elements in both ranges are considered equal.
static <T> boolean	equal(java.util.List<T> first, java.util.List<T> second)
static <T> void	fill(java.util.List<T> array, int from, int last, T value)
static <T> int	lowerBound(java.util.List<T> valueList, java.lang.Comparable<T> value)
static <T> int	lowerBound(java.util.List<T> valueList, int fromIdx, int toIdx, java.lang.Comparable<T> value) This method is equivalent to std:lower_bound function Returns an index pointing to the first element in the ordered collection is equal or greater than passed value
static <T extends java.lang.Number> int	transform(java.util.List<T> list1, int first1, int last1, java.util.List<T> list2, int first2, java.util.List<T> result, Std.BinaryOperator<T> binaryOp)
static <T> int	upperBound(java.util.List<T> valueList, java.lang.Comparable<T> value)
static <T> int	upperBound(java.util.List<T> valueList, int fromIdx, int toIdx, java.lang.Comparable<T> value) This method is equivalent to C++ std:upper_bound function Returns an index pointing to the first element in the ordered collection which is greater than passed value

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Std

public Std()

Method Detail

lowerBound

public static <T> int lowerBound(java.util.List<T> valueList,
                                 int fromIdx,
                                 int toIdx,
                                 java.lang.Comparable<T> value)

This method is equivalent to std:lower_bound function Returns an index pointing to the first element in the ordered collection is equal or greater than passed value

Parameters:

valueList - order collection in ascending order

value - Date to be compared

Returns:

index to element which is >= passed value

lowerBound

public static <T> int lowerBound(java.util.List<T> valueList,
                                 java.lang.Comparable<T> value)

upperBound

public static <T> int upperBound(java.util.List<T> valueList,
                                 int fromIdx,
                                 int toIdx,
                                 java.lang.Comparable<T> value)

This method is equivalent to C++ std:upper_bound function Returns an index pointing to the first element in the ordered collection which is greater than passed value

Type Parameters:

T -

Parameters:

valueList - order collection in ascending order

value - Date to be compared

Returns:

index to element which is > passed value

upperBound

public static <T> int upperBound(java.util.List<T> valueList,
                                 java.lang.Comparable<T> value)

distance

public static <T> int distance(java.util.List<T> values,
                               int first,
                               int last)

This method is equivalent to C++ std:distance function Return distance between indices (or iterators) Calculates the number of elements between first and last. If i is a Random Access Iterator, the function uses operator- to calculate this. Otherwise, the function uses repeatedly the increase or decrease operator (operator++ or operator--) until this distance is calculated.

copy

public static <T> int copy(java.util.List<T> from,
                           int first,
                           int last,
                           java.util.List<T> to)

std:copy: Copy range of elements Copies the elements in the range [first,last) into a range beginning at result. Returns an iterator to the last element in the destination range Parameters first, last Input iterators to the initial and final positions in a sequence to be copied. The range used is [first,last), which contains all the elements between first and last, including the element pointed by first but not the element pointed by last. result Output iterator to the initial position in the destination sequence. This shall not point to any element in the range [first,last).

Returns:

copy

public static <T> int copy(java.util.List<T> from,
                           int first,
                           int last,
                           java.util.List<T> to,
                           int toFrom)

fill

public static <T> void fill(java.util.List<T> array,
                            int from,
                            int last,
                            T value)

equal

public static <T> boolean equal(java.util.List<T> first,
                                int from,
                                int last,
                                java.util.List<T> second,
                                int secondFrom)

Test whether the elements in two ranges are equal Compares the elements in the range [first1,last1) with those in the range beginning at first2, and returns true if the elements in both ranges are considered equal. The elements are compared by either applying the == comparison operator to each pair of corresponding elements, or the template parameter pred (for the second version)\ The behavior of this function template is equivalent to template bool equal ( InputIterator1 first1, InputIterator1 last1, InputIterator2 first2 ) { while ( first1!=last1 ) { if (*first1 != *first2) // or: if (!pred(*first1,*first2)), for pred version return false; ++first1; ++first2; } return true; }

Parameters:

array -

size -

to -

i -

Returns:

equal

public static <T> boolean equal(java.util.List<T> first,
                                java.util.List<T> second)

transform

public static <T extends java.lang.Number> int transform(java.util.List<T> list1,
                                                         int first1,
                                                         int last1,
                                                         java.util.List<T> list2,
                                                         int first2,
                                                         java.util.List<T> result,
                                                         Std.BinaryOperator<T> binaryOp)