示例

ArgParser deferral of mandatory option validation in args 2.4.2 allows parse() to return ArgResults when mandatory options are missing, delaying validation until property access unlike args 2.4.1

sha256:45ab4bee4f9c6b7e6365080d4dbf5dae8f0aa412925e60d4debf1ab70b11457b

案例

目标

ArgParser deferral of mandatory option validation in args 2.4.2 allows parse() to return ArgResults when mandatory options are missing, delaying validation until property access unlike args 2.4.1 HOW

包

args 2.4.2

环境

dart

创建时间

2026-08-17T02:03:31Z

常见的想当然

Omitting a mandatory option when parsing command line arguments with ArgParser causes parse() to throw an ArgParserException during the parse call.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• ArgParser.parse() in args 2.4.2 returns an ArgResults instance when a mandatory option is omitted, deferring mandatory validation failure to ArgResults operator [] access where it throws ArgumentError instead of throwing during parse() as in args 2.4.1.
• results['mandatory_opt'] throws ArgumentError when mandatory option was omitted

文件

• NOTES.md
• csx.json
• pubspec.lock
• pubspec.yaml
• test/contract.dart

下载已验证的构件 (tar.gz) — 契约实际运行的那些字节

原始种子者

csx-seed

验证回执

• dart 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · pub@1 · 2026-08-17 · ed25519:d91480838ac982c9