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Tech review

Status

colour	Yellow
title	todoReady for review

Style guide

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colour	Yellow
title	todoReady for review

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title	todo

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colour	Yellow
title	Ready for review

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colour	Green
title	done

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colour	Red
title	flagged

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hidden	true

Short description

Returns the first element in the of a number, text, or issue list l, or null if l is an empty list.

Output

Status


subtle	true
title	number

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subtle	true
title	text

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subtle	true
title	issue list

Available since

Status

subtle	true
colour	Blue
title	2.1.26

Panel

Supported list types

Table of Contents

exclude	(Supported list types).*
style	circle
type	flat
separator	pipe

Number list

UI Text Box

size	medium
type	info

This function returns the first element in the of a number list l, or null if l is an empty list.

Code Block

language	bash
title	Syntax
linenumbers	true

first(number list l) #Output: Number

UI Expand

title	Examples

Parser expression

Description

Code Block

language	bash
linenumbers	true

first([3, 2, 1, 0])

This example returns the number 3, which is the first element of the number list l.

UI Expand

title	Additional information

Parameters used in this function

Parameter Input (data type) Description

xxxlist

Status


subtle	true
title	data type	number list

Any given number listParameter description.

UI Expand

title	Output

This function returns a

Status


subtle	true
title	number

If the number list is empty, the function returns

Status

subtle	true
title	null

Text list

UI Text Box

size	medium
type	info

This function returns the first element in the text list l, or null if l is an empty of a text list.

Code Block

language	bash
title	Syntax
linenumbers	true

first(string list l) #Output: Text

UI Expand

title	Examples

Parser expression Description

Code Block

language	bash
linenumbers	true

first(["blue", "red", "green"])

This example returns the text: "blue", which is the first element of the text list l.

UI Expand

title	Additional information

Parameters used in this function

Parameter Input (data type) Description

xxxlist

Status


subtle	true
title	data type	text list

Any given text listParameter description.

UI Expand

title	Output

This function returns a

Status


subtle	true
title	text

If the text list is empty, the function returns

Status

subtle	true
title	null

Issue list

UI Text Box

size	medium
type	info

The function returns an issue list with the first element in issue list l, or an empty list if l is an empty listof the given issue list.

Code Block

language	bash
title	Syntax

first(issue list l) #Output: Issue list

UI Expand

title	Examples

Parser expression Description

Code Block

language	bash
linenumbers	true

first(subtasks())

This example returns a list with the last subtask returned by subtasks() in it.

Info
If `subtasks()` would return `[SUB-1, SUB-2, SUB-3]`, the output would be `[SUB-1]`.

UI Expand

title	Additional information

Parameters used in this function

Parameter Input (data type) Description

xxxlist

Status


subtle	true
title	data type	issue list

Any given issue list. Usually this value is retrieved from a function (e.g. linkedissues() or subtasks())Parameter description.

UI Expand

title	Output

This function returns an

Status


subtle	true
title	issue list

If the issue list is empty, the function returns

Status

subtle	true
title	null

Content

Space Tools

Versions Compared

Old Version 8

New Version 9

Key

Supported list types

Number list

Text list

Issue list