Help Center/ Resource Formation Service/ Template Reference/ Application Orchestration Service/ Template Introduction/ Built-In Functions/ get_list_length
Updated on 2023-08-11 GMT+08:00
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get_list_length

The get_list_length function can be used to calculate the number of elements in an array structure. Generally, this function is used together with the split function.

Syntax

get_list_length: list

Parameter Description

Table 1 Parameter description

Parameter

Parameter Description

list

Array structure

Return Value

The length of an array is returned.

Examples

The following describes how to use the get_list_length function to obtain the length of an array:

inputs:
  source:
    default: "a,b,c,d,e,f,g"
node_templates: 
  testStack: 
    type: HuaweiCloud.AOS.Stack 
    properties: 
      templateId: "abcdf-fdeee" 
      inputs:
        aaa: {select: [0, {split: [",", {get_input: source}]}]}                 # The value is a.
        bbb: {select: [1, ["alpha", "beta", "gamma"]]}            # The value is beta.
        cc_length: {get_list_length: {split: [",", {get_input: source}]}}       # The value is 7.
        bbb_length: {get_list_length: ["alpha", "beta", "gamma"]}  # The value is 3.
Parent topic: Built-In Functions