可拋

Marks a function as able to throw along a recoverable channel.

Syntax: 函式 <name>(...) 可拋 → <type> [⇥ <error-type>]

Category#

function

Related#

• 拋出
• 捕捉
• ⇥
• 錯誤
• 不變

Examples#

radix/corpus/meta/iacit.fab (canonical · modifier)#

Marks a function as able to throw along a recoverable channel.

# =============================================================================
# 可拋 — Marks a function as able to throw along a recoverable channel.
# =============================================================================
#
# What this teaches:
#   • the `可拋` modifier on function declarations — marks a function as throwable
#   • the `⇥` error type annotation for specifying the error type contract
#
# Common mistakes:
#   • Forgetting to declare the ⇥ error type — 可拋 requires an explicit ⇥ error type in the function signature.
#
# See also: 拋出, 捕捉, ⇥, 錯誤, 不變
# =============================================================================

# meta/iacit — throwable function modifier
#
# GRAMMAR:
#   funcModifier :← '可拋'
#
# EXPECTED OUTPUT:
#   可拋 surface declared
#
# BACKEND:
#   Prefer explicit ⇥ error types for callable contracts; see 拋出/functio-fallibilis.fab.

interface Canens {
    fn canta(string vox) throws → void
}

main {
    print "iacit modifier declared"
}

Expected output:

iacit modifier declared