Add ?? with nullsafe or default value.

Open
#1,232 3 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Domain
compilers

Research direction

Start by reading the linked Jsonnet, sjsonnet, and jrsonnet references to compare the proposed null-coalescing syntax and behavior. Trace the existing expression syntax and evaluation entry points in Jsonnet, then add tests covering a null-safe lookup with a default value; done means the example evaluates as requested without changing non-null behavior.

Written by the indexing model from the issue text.

Description

refs: https://github.com/google/jsonnet/issues/930

better to have it as

maybeNullObj?['someField'] ?? 'defaultValue'

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Nullish_coalescing
refs in sjsonnet: https://github.com/databricks/sjsonnet/issues/328
refs: https://github.com/CertainLach/jrsonnet/blob/master/docs/features.adoc#exp-null-coalescing
refs: https://tace.alibaba-inc.com/#/tmcp/ali-office/server/supermall/detail?businessId=huming-guarden&selectedKeys=server

Dominant language
Jsonnet
Stars
7.6k
Forks
475
No merged PRs in 30d

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from google/jsonnet

All issues in google/jsonnet

Similar issues

More Compilers issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.