Gets or sets the length of the array. This is a number one higher than the highest index in the array.
Iterator
Applies an accumulator function over a sequence.
An accumulator function to be invoked on each element.
The final accumulator value.
Determines whether any element of a sequence satisfies a condition.
A function to test each element for a condition.
true if any elements in the source sequence pass the test in the specified predicate; otherwise, false.
Takes an integer value and returns the item at that index, allowing for positive and negative integers. Negative integers count back from the last item in the array.
Computes the average of a sequence of System.Int64 values that are obtained by invoking a transform function on each element of the input sequence.
The average of the sequence of values.
Converts the elements of an List to the specified type.
An List that contains each element of the source sequence converted to the specified type.
Removes all elements from the List.
Determines whether an element is in the List.
The object to locate in the List. The value can be null for reference types.
true if item is found in the List otherwise, false.
Returns the this object after copying a section of the array identified by start and end to the same array starting at position target
If target is negative, it is treated as length+target where length is the length of the array.
If start is negative, it is treated as length+start. If end is negative, it is treated as length+end.
If not specified, length of the this object is used as its default value.
Returns distinct elements from a sequence by using the default equality comparer to compare values.
An List that contains distinct elements from the source sequence.
Returns an iterable of key, value pairs for every entry in the array
Determines whether all the members of an array satisfy the specified test.
A function that accepts up to three arguments. The every method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value false, or until the end of the array.
An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.
Determines whether all the members of an array satisfy the specified test.
A function that accepts up to three arguments. The every method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value false, or until the end of the array.
An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.
Changes all array elements from start to end index to a static value and returns the modified array
value to fill array section with
index to start filling the array at. If start is negative, it is treated as length+start where length is the length of the array.
index to stop filling the array at. If end is negative, it is treated as length+end.
Returns the elements of an array that meet the condition specified in a callback function.
A function that accepts up to three arguments. The filter method calls the predicate function one time for each element in the array.
An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.
Returns the elements of an array that meet the condition specified in a callback function.
A function that accepts up to three arguments. The filter method calls the predicate function one time for each element in the array.
An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.
Returns the value of the first element in the array where predicate is true, and undefined otherwise.
find calls predicate once for each element of the array, in ascending order, until it finds one where predicate returns true. If such an element is found, find immediately returns that element value. Otherwise, find returns undefined.
If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.
Returns the index of the first element in the array where predicate is true, and -1 otherwise.
find calls predicate once for each element of the array, in ascending order, until it finds one where predicate returns true. If such an element is found, findIndex immediately returns that element index. Otherwise, findIndex returns -1.
If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.
Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
A function to test each element for a condition.
if source is empty or if no element passes the test specified by predicate; otherwise, the first element in source that passes the test specified by predicate.
Returns a new array with all sub-array elements concatenated into it recursively up to the specified depth.
The maximum recursion depth
Calls a defined callback function on each element of an array. Then, flattens the result into a new array. This is identical to a map followed by flat with depth 1.
A function that accepts up to three arguments. The flatMap method calls the callback function one time for each element in the array.
An object to which the this keyword can refer in the callback function. If thisArg is omitted, undefined is used as the this value.
Performs the specified action for each element in an array.
A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the array.
An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.
A function to extract the key for each element.
An IEnumerable<IGrouping<TKey, TSource>> in C# or IEnumerable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each System.Linq.IGrouping`2 object contains a collection of objects and a key.
Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.
A function to extract the key for each element.
An System.Collections.Generic.IEqualityComparer`1 to compare keys.
An IEnumerable<IGrouping<TKey, TSource>> in C# or IEnumerable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each System.Linq.IGrouping`2 object contains a collection of objects and a key.
Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.
The sequence to join to the first sequence.
A function to extract the join key from each element of the first sequence.
A function to extract the join key from each element of the second sequence.
A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence.
An List that contains elements of type V that are obtained by performing a grouped join on two sequences.
Determines whether an array includes a certain element, returning true or false as appropriate.
The element to search for.
The position in this array at which to begin searching for searchElement.
Returns the index of the first occurrence of a value in an array, or -1 if it is not present.
The value to locate in the array.
The array index at which to begin the search. If fromIndex is omitted, the search starts at index 0.
Adds all the elements of an array into a string, separated by the specified separator string.
A string used to separate one element of the array from the next in the resulting string. If omitted, the array elements are separated with a comma.
Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.
The sequence to join to the first sequence.
A function to extract the join key from each element of the first sequence.
A function to extract the join key from each element of the second sequence.
A function to create a result element from two matching elements.
An List that has elements of type V that are obtained by performing an inner join on two sequences.
Returns an iterable of keys in the array
Returns the index of the last occurrence of a specified value in an array, or -1 if it is not present.
The value to locate in the array.
The array index at which to begin searching backward. If fromIndex is omitted, the search starts at the last index in the array.
Calls a defined callback function on each element of an array, and returns an array that contains the results.
A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.
An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
Invokes a transform function on each element of a sequence and returns the maximum value.
A transform function to apply to each element.
The maximum value in the sequence.
Invokes a transform function on each element of a sequence and returns the minimum value.
The minimum value in the sequence.
Sorts the elements of a sequence in ascending order according to a key or by using a specified comparer.
A function to extract a key from an element.
An System.Collections.Generic.IComparer`1 to compare keys.
An System.Linq.IOrderedEnumerable`1 whose elements are sorted according to a key.
Removes the last element from an array and returns it. If the array is empty, undefined is returned and the array is not modified.
Appends new elements to the end of an array, and returns the new length of the array.
New elements to add to the array.
Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.
Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.
If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.
Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.
Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.
If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.
Removes the element at the specified index of the Lis.
The zero-based index of the element to remove.
Reverses the elements in an array in place. This method mutates the array and returns a reference to the same array.
Projects each element of a sequence into a new form.
A transform function to apply to each element.
An List whose elements are the result of invoking the transform function on each element of source.
Removes the first element from an array and returns it. If the array is empty, undefined is returned and the array is not modified.
Returns a copy of a section of an array. For both start and end, a negative index can be used to indicate an offset from the end of the array. For example, -2 refers to the second to last element of the array.
The beginning index of the specified portion of the array. If start is undefined, then the slice begins at index 0.
The end index of the specified portion of the array. This is exclusive of the element at the index 'end'. If end is undefined, then the slice extends to the end of the array.
Determines whether the specified callback function returns true for any element of an array.
A function that accepts up to three arguments. The some method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value true, or until the end of the array.
An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.
Sorts an array in place. This method mutates the array and returns a reference to the same array.
Function used to determine the order of the elements. It is expected to return a negative value if the first argument is less than the second argument, zero if they're equal, and a positive value otherwise. If omitted, the elements are sorted in ascending, ASCII character order.
[11,2,22,1].sort((a, b) => a - b)
Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.
The zero-based location in the array from which to start removing elements.
The number of elements to remove.
An array containing the elements that were deleted.
Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.
The zero-based location in the array from which to start removing elements.
The number of elements to remove.
Elements to insert into the array in place of the deleted elements.
An array containing the elements that were deleted.
Computes the sum of the sequence of System.Decimal values that are obtained by invoking a transform function on each element of the input sequence.
A transform function to apply to each element.
The sum of the projected values.
Returns a string representation of an array. The elements are converted to string using their toLocaleString methods.
Creates a Lookup from an List according to a specified key selector function.
A function to extract a key from each element.
A Lookup that contains keys and values.
Returns a string representation of an array.
Inserts new elements at the start of an array, and returns the new length of the array.
Elements to insert at the start of the array.
Returns an iterable of values in the array
Filters a sequence of values based on a predicate.
A function to test each element for a condition.
An List that contains elements from the input sequence that satisfy the condition.
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Is an object whose properties have the value 'true' when they will be absent when used in a 'with' statement.