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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:11:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:11:28 +0000
commit94a0819fe3a0d679c3042a77bfe6a2afc505daea (patch)
tree2b827afe6a05f3538db3f7803a88c4587fe85648 /vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.md
parentAdding upstream version 1.64.0+dfsg1. (diff)
downloadrustc-94a0819fe3a0d679c3042a77bfe6a2afc505daea.tar.xz
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Adding upstream version 1.66.0+dfsg1.upstream/1.66.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+```console
+$ 04_02_parse --help
+clap [..]
+A simple to use, efficient, and full-featured Command Line Argument Parser
+
+USAGE:
+ 04_02_parse[EXE] <PORT>
+
+ARGS:
+ <PORT> Network port to use
+
+OPTIONS:
+ -h, --help Print help information
+ -V, --version Print version information
+
+$ 04_02_parse 22
+PORT = 22
+
+$ 04_02_parse foobar
+? failed
+error: Invalid value "foobar" for '<PORT>': invalid digit found in string
+
+For more information try --help
+
+$ 04_02_parse_derive 0
+? failed
+error: Invalid value "0" for '<PORT>': 0 is not in 1..=65535
+
+For more information try --help
+
+```