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Array methods: shift(), unshift(), push(), pop(), splice()

Description

Copied from: https://issues.jboss.org/browse/RAILO-3252

Performing queue / stack operations on arrays is fairly common, and whilst doable with delete() / insert() methods, is not as elegant as these specific methods.

splice() is less obvious, and I'm not sure JavaScript (which is where I'm getting the motivation for these) gets it quite right. I see two operations here: basically an "interior" version of push() and pop(), where the items are inserted at the location (moving subsequent items down, not overwriting them), or extracting and returning from the specified location.

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Brandon Brown 18 June 2018 at 16:47

I implemented ArrayPop, ArrayShift and ArraySplice in this extension. https://github.com/Yamaha32088/extension-arrayfunctions

Igal Sapir 10 February 2016 at 22:35

I would support this if we can define the methods outside of the ECMAScript realm. for example, in ECMAScript unshift() returns the length of the array, but I prefer it to return the array itself, for method chaining.

Michael Offner 10 February 2016 at 18:50

see my comment here:
https://luceeserver.atlassian.net/browse/LDEV-642

we should not overpopulate Lucee with functions

Adam Cameron 11 January 2016 at 10:31

This is pretty off-topic for this ticket, @dawesi, but perhaps what listDeleteAt() needs is the ability to take a negative index, meaning "from the end of the list"? Might be worth you raising an ER for this?

PS: I only just realised that "dawesi" is "doorsey" not "dah-wesi". Never correlated the handle "dawesi" with your actual name before!

Chris Dawes 11 January 2016 at 10:24

Can't wait for this...

I just hate using listDeleteAt(var,listLast(var),'\') - should really put in an er for listDeleteAt(var,'last') really, but this will do the job.

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Created 1 February 2015 at 15:50
Updated 11 June 2021 at 14:11
Resolved 11 June 2021 at 14:11

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