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| author | Jo-Philipp Wich <jo@mein.io> | 2021-09-25 19:34:14 +0200 |
|---|---|---|
| committer | Jo-Philipp Wich <jo@mein.io> | 2021-10-11 09:39:12 +0200 |
| commit | 4ee06d8138a107908a9fb45220fea32055b3c48a (patch) | |
| tree | 2f0bd421931b2dd2daf504719beb63cc2885d23a /tests/custom/00_syntax/11_misc_literals | |
| parent | e43b751aab997c5e74a0712f7569d90bd3d6b429 (diff) | |
syntax: introduce optional chaining operators
Introduce new operators `?.`, `?.[…]` and `?.(…)` to simplify looking up
deeply nested property chain in a secure manner.
The `?.` operator behaves like the `.` property access operator but yields
`null` if the left hand side is `null` or not an object.
Like `?.`, the `?.[…]` operator behaves like the `[…]` computed property
access but yields `null` if the left hand side is `null` or neither an
object or array.
Finally the `?.(…)` operator behaves like the function call operator `(…)`
but yields `null` if the left hand side is `null` or not a callable
function.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Diffstat (limited to 'tests/custom/00_syntax/11_misc_literals')
0 files changed, 0 insertions, 0 deletions