char[] (Groovy JDK enhancements)

Methods Summary

Methods
Return type	Name and parameters
`boolean`	`any(Closure predicate)` Iterates over the contents of a char Array, and checks whether a predicate is valid for at least one element.
`boolean`	`asBoolean()` Coerces a char array to a boolean value.
`List`	`chop(int chopSizes)` Chops the char array into pieces, returning lists with sizes corresponding to the supplied chop sizes.
`boolean`	`contains(Object value)` Checks whether the array contains the given value.
`Number`	`count(Object value)` Counts the number of occurrences of the given value inside this array.
`char[]`	`each(Closure closure)` Iterates through a char[] passing each char to the given closure.
`char[]`	`eachWithIndex(Closure closure)` Iterates through a char[], passing each char and the element's index (a counter starting at zero) to the given closure.
`boolean`	`equals(char[] right)` Compare the contents of this array to the contents of the given array.
`char`	`first()` Returns the first item from the char array.
`Collection`	`flatten()` Flatten an array.
`List`	`getAt(IntRange range)` Support the subscript operator for a char array with an IntRange giving the desired indices.
`List`	`getAt(ObjectRange range)` Support the subscript operator for a boolean array with an ObjectRange giving the desired indices.
`List`	`getAt(Range range)` Support the subscript operator for a char array with a range giving the desired indices.
`List`	`getAt(Collection indices)` Support the subscript operator for a char array with a (potentially nested) collection giving the desired indices.
`IntRange`	`getIndices()` Returns indices of the char array.
`char`	`head()` Returns the first item from the char array.
`char[]`	`init()` Returns the items from the char array excluding the last item.
`String`	`join(String separator)` Concatenates the string representation of each item in this array, with the given String as a separator between each item.
`char`	`last()` Returns the last item from the char array.
`char[]`	`reverse()` Creates a new char array containing items which are the same as this array but in reverse order.
`char[]`	`reverse(boolean mutate)` Reverse the items in an array.
`char[]`	`reverseEach(Closure closure)` Iterates through a char[] in reverse order passing each char to the given closure.
`int`	`size()` Provide arrays with a `size` method similar to collections.
`Stream`	`stream()` Returns a sequential Stream with the specified array as its source.
`char`	`sum()` Sums the items in an array.
`char`	`sum(char initialValue)` Sums the items in an array, adding the result to some initial value.
`char[]`	`swap(int i, int j)` Swaps two elements at the specified positions.
`char[]`	`tail()` Returns the items from the char array excluding the first item.
`List`	`toList()` Converts this array to a List of the same size, with each element added to the list.
`Set`	`toSet()` Converts this array to a Set, with each unique element added to the set.
`String`	`toString()` Returns the string representation of the given array.

- Methods Detail
  - public boolean any(Closure predicate)
    
    Iterates over the contents of a char Array, and checks whether a predicate is valid for at least one element.
```
char[] array = ['a', 'b', 'c']
assert array.any{ it <= 'a' }
assert !array.any{ it < 'a' }
```
    Parameters:
    
    predicate - the closure predicate used for matching
    
    Returns:
    
    true if any iteration for the chars matches the closure predicate
    
    Since:
    
    5.0.0
  - public boolean asBoolean()
    
    Coerces a char array to a boolean value. A char array is false if the array is of length 0, and true otherwise.
    
    Returns:
    
    the array's boolean value
    
    Since:
    
    1.7.4
  - public List chop(int chopSizes)
    
    Chops the char array into pieces, returning lists with sizes corresponding to the supplied chop sizes. If the array isn't large enough, truncated (possibly empty) pieces are returned. Using a chop size of -1 will cause that piece to contain all remaining items from the array.
```
char[] array = [0, 1, 2]
assert array.chop(1, 2) == [[0], [1, 2]]
```
    Parameters:
    
    chopSizes - the sizes for the returned pieces
    
    Returns:
    
    a list of lists chopping the original array elements into pieces determined by chopSizes
    
    Since:
    
    5.0.0
    
    See Also:
    
    DefaultGroovyMethods#collate(Object[], int) to chop a list into pieces of a fixed size
  - public boolean contains(Object value)
    
    Checks whether the array contains the given value.
    
    Parameters:
    
    value - the value being searched for
    
    Returns:
    
    true if the array contains the value
    
    Since:
    
    1.8.6
  - public Number count(Object value)
    
    Counts the number of occurrences of the given value inside this array. Comparison is done using Groovy's == operator (using compareTo(value) == 0).
```
char[] array = ['x', 'y', 'z', 'z', 'y']
assert array.count('y') == 2
```
    Parameters:
    
    value - the value being searched for
    
    Returns:
    
    the number of occurrences
    
    Since:
    
    1.6.4
    
    See Also:
    
    DefaultGroovyMethods#count(Iterator, Object)
  - public char[] each(Closure closure)
    
    Iterates through a char[] passing each char to the given closure.
```
char[] array = ['a' as char, 'b' as char, 'c' as char]
String result = ''
array.each{ result += it }
assert result == 'abc'
```
    Parameters:
    
    closure - the closure applied on each char
    
    Returns:
    
    the self array
    
    Since:
    
    5.0.0
  - public char[] eachWithIndex(Closure closure)
    
    Iterates through a char[], passing each char and the element's index (a counter starting at zero) to the given closure.
```
char[] array = ['a' as char, 'b' as char, 'c' as char]
String result = ''
array.eachWithIndex{ item, index -> result += "$index($item)" }
assert result == '0(a)1(b)2(c)'
```
    Parameters:
    
    closure - a Closure to operate on each char
    
    Returns:
    
    the self array
    
    Since:
    
    5.0.0
  - public boolean equals(char[] right)
    
    Compare the contents of this array to the contents of the given array.
    Example usage:
```
char[] array1 = ['a', 'b']
char[] array2 = ['a', 'b']
assert array1 !== array2
assert array1.equals(array2)
```
    Parameters:
    
    right - the array being compared
    
    Returns:
    
    true if the contents of both arrays are equal.
    
    Since:
    
    5.0.0
  - public char first()
    
    Returns the first item from the char array.
```
char[] chars = ['a', 'b', 'c']
assert chars.first() == 'a'
```
    An alias for head().
    
    Returns:
    
    the first element
    
    Since:
    
    5.0.0
  - public Collection flatten()
    
    Flatten an array. This array is added to a new collection. It is an alias for toList() but allows algorithms to be written which also work on multidimensional arrays or non-arrays where flattening would be applicable.
```
char[] array = 'ab'.chars
assert array.flatten() == ['a', 'b']
```
    Returns:
    
    a Collection of the array elements
    
    Since:
    
    1.6.0
  - public List getAt(IntRange range)
    
    Support the subscript operator for a char array with an IntRange giving the desired indices.
```
char[] array = 'abcdef'.chars
assert array[2..3] == ['c', 'd']
assert array[-2..-1] == ['e', 'f']
assert array[-1..-2] == ['f', 'e']
```
    Parameters:
    
    range - an IntRange indicating the indices for the items to retrieve
    
    Returns:
    
    list of the retrieved chars
    
    Since:
    
    1.0
  - public List getAt(ObjectRange range)
    
    Support the subscript operator for a boolean array with an ObjectRange giving the desired indices.
```
char[] array = 'abcdef'.chars
def range = new ObjectRange(2, 3)
assert array[range] == ['c', 'd']
```
    Parameters:
    
    range - an ObjectRange indicating the indices for the items to retrieve
    
    Returns:
    
    list of the retrieved chars
    
    Since:
    
    1.0
  - public List getAt(Range range)
    
    Support the subscript operator for a char array with a range giving the desired indices.
```
char[] array = 'abcdef'.chars
assert array[2..<2] == [] // EmptyRange
assert array[(0..5.5).step(2)] == ['a', 'c', 'e']  // NumberRange
assert array[(1..5.5).step(2)] == ['b', 'd', 'f']  // NumberRange
```
    Parameters:
    
    range - a range indicating the indices for the items to retrieve
    
    Returns:
    
    list of the retrieved chars
    
    Since:
    
    1.5.0
  - public List getAt(Collection indices)
    
    Support the subscript operator for a char array with a (potentially nested) collection giving the desired indices.
```
char[] array = 'abcde'.chars
assert array[2, 3] == ['c', 'd']
assert array[1, 0..1, [0, [-1]]] == ['b', 'a', 'b', 'a', 'e']
```
    Parameters:
    
    indices - a collection of indices for the items to retrieve
    
    Returns:
    
    list of the chars at the given indices
    
    Since:
    
    1.0
  - public IntRange getIndices()
    
    Returns indices of the char array.
```
char[] array = 'ab'.chars
assert array.indices == 0..1
```
    Since:
    
    3.0.8
    
    See Also:
    
    DefaultGroovyMethods#getIndices(Object[])
  - public char head()
    
    Returns the first item from the char array.
```
char[] chars = ['a', 'b', 'c']
assert chars.head() == 'a'
```
    An alias for first().
    
    Returns:
    
    the first element
    
    Since:
    
    5.0.0
  - public char[] init()
    
    Returns the items from the char array excluding the last item.
```
char[] chars = ['a', 'b', 'c']
def result = chars.init()
assert result == ['a', 'b']
assert chars.class.componentType == result.class.componentType
```
    Returns:
    
    an array without its last element
    
    Since:
    
    5.0.0
  - public String join(String separator)
    
    Concatenates the string representation of each item in this array, with the given String as a separator between each item.
    
    Parameters:
    
    separator - a String separator
    
    Returns:
    
    the joined String
    
    Since:
    
    2.4.1
  - public char last()
    
    Returns the last item from the char array.
```
char[] chars = ['a', 'b', 'c']
assert chars.last() == 'c'
```
    Returns:
    
    the last element
    
    Since:
    
    5.0.0
  - public char[] reverse()
    
    Creates a new char array containing items which are the same as this array but in reverse order.
```
char[] array = ['a', 'b']
assert array.reverse() == ['b', 'a'] as char[]
```
    Returns:
    
    an array containing the reversed items
    
    Since:
    
    5.0.0
    
    See Also:
    
    char[]#reverse(boolean)
  - public char[] reverse(boolean mutate)
    
    Reverse the items in an array. If mutate is true, the original array is modified in place and returned. Otherwise, a new array containing the reversed items is produced.
```
char[] array = ['a', 'b', 'c']
def yarra = array.reverse(true)
assert array == ['c', 'b', 'a']
assert yarra == ['c', 'b', 'a']
assert array === yarra
yarra = array.reverse(false)
assert array !== yarra
assert array == ['c', 'b', 'a']
assert yarra == ['a', 'b', 'c']
```
    Parameters:
    
    mutate - true if the array itself should be reversed in place, false if a new array should be created
    
    Returns:
    
    an array containing the reversed items
    
    Since:
    
    5.0.0
  - public char[] reverseEach(Closure closure)
    
    Iterates through a char[] in reverse order passing each char to the given closure.
```
char[] array = 'abc'.chars
String result = ''
array.reverseEach{ result += it }
assert result == 'cba'
```
    Parameters:
    
    closure - the closure applied on each char
    
    Returns:
    
    the self array
    
    Since:
    
    5.0.0
  - public int size()
    
    Provide arrays with a size method similar to collections.
    
    Returns:
    
    the length of the array
    
    Since:
    
    1.0
    
    See Also:
    
    Array#getLength(java.lang.Object)
  - public Stream stream()
    
    Returns a sequential Stream with the specified array as its source.
    
    Returns:
    
    a Stream for the array
    
    Since:
    
    2.5.0
  - public char sum()
    
    Sums the items in an array.
```
assert (1+2+3+4 as char) == ([1,2,3,4] as char[]).sum()
```
    Returns:
    
    The sum of all the items
    
    Since:
    
    2.4.2
  - public char sum(char initialValue)
    
    Sums the items in an array, adding the result to some initial value.
```
assert (5+1+2+3+4 as char) == ([1,2,3,4] as char[]).sum(5 as char)
```
    Parameters:
    
    initialValue - the items in the array will be summed to this initial value
    
    Returns:
    
    The sum of all the items.
    
    Since:
    
    2.4.2
  - public char[] swap(int i, int j)
    
    Swaps two elements at the specified positions.
    Example:
```
assert ([1, 3, 2, 4] as char[]) == ([1, 2, 3, 4] as char[]).swap(1, 2)
```
    Parameters:
    
    i - a position
    
    j - a position
    
    Returns:
    
    self
    
    Since:
    
    2.4.0
  - public char[] tail()
    
    Returns the items from the char array excluding the first item.
```
char[] chars = ['a', 'b', 'c']
def result = chars.tail()
assert result == ['b', 'c']
assert chars.class.componentType == result.class.componentType
```
    Returns:
    
    an array without its first element
    
    Since:
    
    5.0.0
  - public List toList()
    
    Converts this array to a List of the same size, with each element added to the list.
    
    Returns:
    
    a list containing the contents of this array.
    
    Since:
    
    1.0
  - public Set toSet()
    
    Converts this array to a Set, with each unique element added to the set.
```
char[] array = 'xyzzy'.chars
Set expected = ['x', 'y', 'z']
assert array.toSet() == expected
```
    Returns:
    
    a set containing the unique contents of this array.
    
    Since:
    
    1.8.0
  - public String toString()
    
    Returns the string representation of the given array.
```
char[] array = 'abcd'.chars
assert array instanceof char[]
assert array.toString() == 'abcd'
```
    Returns:
    
    the string representation
    
    Since:
    
    1.6.0

Class char[]

Methods Summary

Methods Detail

public boolean any(Closure predicate)

public boolean asBoolean()

public List chop(int chopSizes)

public boolean contains(Object value)

public Number count(Object value)

public char[] each(Closure closure)

public char[] eachWithIndex(Closure closure)

public boolean equals(char[] right)

public char first()

public Collection flatten()

public List getAt(IntRange range)

public List getAt(ObjectRange range)

public List getAt(Range range)

public List getAt(Collection indices)

public IntRange getIndices()

public char head()

public char[] init()

public String join(String separator)

public char last()

public char[] reverse()

public char[] reverse(boolean mutate)

public char[] reverseEach(Closure closure)

public int size()

public Stream stream()

public char sum()

public char sum(char initialValue)

public char[] swap(int i, int j)

public char[] tail()

public List toList()

public Set toSet()

public String toString()