[] multimethod

Methods

[](lib:CLib, symbol:Str): Unfinished feature. Don't use!

[](arr:Arr, range:NumRange): Get array elements at specified indexes.
Returns
Arr

[](arr:Arr, idx:Int): Get element at the given index or throw IndexNotFound if the index is out of range (element at the given index does not exist).
Returns
Any

Get substring

Example

"abcd"[1..3]  # "bc"

[](h:Hash, k:Any)

Get hash value by key. Throws KeyNotFound.

Returns

Any

Example

h = {"a": 1}
h["a"]  # 1
h["b"]  # KeyNotFound exception thrown

[](al:ArrLike, idx:Int) Source: stdlib.ngs:657: Set element in the underlying array.

[](hl:HashLike, k:Any) Source: stdlib.ngs:693

Get value by key. Throws KeyNotFound.

Automatically called by NGS for syntax

your_hashlike[k]

[](arr:Arr, idx:Int) Source: stdlib.ngs:1902

Get array element by index from the end (negative indexes handler). Throws IndexNotFound if abs(idx) > len(arr).

Parameters

idx	Negative index

Example

[10,20,30][-1]  # 30

[](arr:Arr, r:NumRange) Source: stdlib.ngs:1914

Get array elements at specified indexes. Indexes specified by NumRange.

Parameters

r	NumRange with negatve .end

Returns

Arr

Example

[10,20,30,40][1..-1]  # [20,30]

[](arr:Arr, r:PredRange) Source: stdlib.ngs:1950

Extract array elements between the element that matches r.start and the element that matches r.end . Starting and ending elements are optionally included, depending on r.include_start and r.include_end .

Example

%[a1 a2 b1 b2][/^a/../^b/]   # ['a2']
%[a1 a2 b1 b2][/^a/.../^b/]  # ['a1', 'a2', 'b1']
%[a1 a2 b1 b2][/^a/.../^x/]  # IndexNotFound exception

[](arr:Arr, indexes:Arr) Source: stdlib.ngs:1997

Get array elements at specified indexes.

Parameters

arr	Array to pick items from
indexes	Indexes of items to pick

Returns

Arr

Example

[10,20,30,40][[0,3]]  # [10, 40]

[](s:Str, i:Int) Source: stdlib.ngs:3289

Get given character (currently byte) of the string

Parameters

s	Original string
i	Index of the character to return

Example

"abc"[0]  # "a"

[](s:Str, i:Int) Source: stdlib.ngs:3299

Get given character (currently byte) of the string (negative indexes handler). Throws IndexNotFound if abs(i) > len(s).

Parameters

s	Original string.
i	Negative index of the character to return

Example

"abc"[-1]  # "c"

[](s:Str, r:NumRange) Source: stdlib.ngs:3313

Get a substring. Indexes in s are specified by NumRange.

Parameters

s	Original string
r	NumRange with negatve .end

Returns

Str

Example

"(Look ma, no parens)"[1..-1]  # "Look ma, no parens"

[](my:MatchY, idx:Int) Source: stdlib.ngs:5381

Convenience method to access matches in MatchY

Example

("abc" ~ /a(.)c/)[1]  # "b"

[](s:Str, r:RegExp) Source: stdlib.ngs:5562

Get substring of a string that corresponds to first match of given regular expression

Example

"x10ab20c30y"[/[0-9]+/]  # "10"