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hello world! bluesky
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part 1
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quick start
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example
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bluesky
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terminal
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shell
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rust
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part 3
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hello world
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seahorse
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reqwest
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part 4
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ai
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config
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mention
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base64
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<h3 id="seahorse">seahorse</h3>
<p>Next, introduce the framework <a href="https://github.com/ksk001100/seahorse" target="_blank">ksk001100/seahorse</a>.</p>
<p>This framework is for writing a cli (command line interface).</p>
<p>A cli is simply the same command as <code>which</code> or <code>curl</code> that you have been executing. We will now create our own command.</p>
<p>It may sound difficult to some, but it is easy if you use a wonderful framework called <code>seahorse</code>.</p>
<p>First you install <code>seahorse</code>, but to install the library in rust, write the package name in <code>Cargo.toml</code>. This will automatically install the library when you build.</p>
<p>Note that library is sometimes abbreviated as <code>lib</code>.</p>
<div><p class="code-filename">Cargo.toml</p></div>
<pre><code class="lang-toml"><span class="hljs-section">[package]</span>
<span class="hljs-attr">name</span> = <span class="hljs-string">&quot;rust&quot;</span>
<span class="hljs-attr">version</span> = <span class="hljs-string">&quot;0.1.0&quot;</span>
<span class="hljs-attr">edition</span> = <span class="hljs-string">&quot;2021&quot;</span>
<span class="hljs-section">
[dependencies]</span>
<span class="hljs-attr">seahorse</span> = <span class="hljs-string">&quot;*&quot;</span>
</code></pre>
<p>Then we write the body code that uses <code>seahorse</code>.</p>
<div><p class="code-filename">src/main.rs</p></div>
<pre><code class="lang-rust"><span class="hljs-keyword">use</span> seahorse::{App, Context};
<span class="hljs-keyword">use</span> std::env;
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">main</span></span>() {
<span class="hljs-keyword">let</span> args: <span class="hljs-built_in">Vec</span>&lt;<span class="hljs-built_in">String</span>&gt; = env::args().collect();
<span class="hljs-keyword">let</span> app = App::new(<span class="hljs-built_in">env!</span>(<span class="hljs-string">&quot;CARGO_PKG_NAME&quot;</span>))
.action(s)
;
app.run(args);
}
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">s</span></span>(_c: &amp;Context) {
<span class="hljs-built_in">println!</span>(<span class="hljs-string">&quot;Hello, world!&quot;</span>);
}
</code></pre>
<p>The contents are very simple. When the command is executed, <code>Hello, world!</code> is output.</p>
<pre><code class="lang-sh">$ cargo build
$ ./target/debug/rust
Hello, world!
</code></pre>
<p>What is different now, for example, is that the <code>help</code> option is automatic.</p>
<pre><code class="lang-sh">$ ./target/debug/rust -h
Name:
rust
Flags:
-h, --help : Show <span class="hljs-built_in">help</span>
</code></pre>
<p>To help readers understand the awesomeness of <code>seahorse</code>, ask them to think about the application themselves.</p>
<div><p class="code-filename">src/main.rs</p></div>
<pre><code class="lang-rust"><span class="hljs-keyword">use</span> seahorse::{App, Context, Command};
<span class="hljs-keyword">use</span> std::env;
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">main</span></span>() {
<span class="hljs-keyword">let</span> args: <span class="hljs-built_in">Vec</span>&lt;<span class="hljs-built_in">String</span>&gt; = env::args().collect();
<span class="hljs-keyword">let</span> app = App::new(<span class="hljs-built_in">env!</span>(<span class="hljs-string">&quot;CARGO_PKG_NAME&quot;</span>))
.action(s)
.command(
Command::new(<span class="hljs-string">&quot;yes&quot;</span>)
.alias(<span class="hljs-string">&quot;y&quot;</span>)
.action(y),
)
.command(
Command::new(<span class="hljs-string">&quot;no&quot;</span>)
.alias(<span class="hljs-string">&quot;n&quot;</span>)
.action(n),
)
;
app.run(args);
}
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">s</span></span>(_c: &amp;Context) {
<span class="hljs-built_in">println!</span>(<span class="hljs-string">&quot;Hello, world!&quot;</span>);
}
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">y</span></span>(_c: &amp;Context) {
<span class="hljs-built_in">println!</span>(<span class="hljs-string">&quot;yes&quot;</span>);
}
<span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">n</span></span>(_c: &amp;Context) {
<span class="hljs-built_in">println!</span>(<span class="hljs-string">&quot;no&quot;</span>);
}
</code></pre>
<p>Try writing this and executing the command you created.</p>
<pre><code class="lang-sh">$ ./target/debug/rust
$ ./target/debug/rust y
$ ./target/debug/rust n
</code></pre>
<p>The differences and key points of the code are as follows</p>
<p><pre><code class="lang-diff"> use seahorse::{App, Context
<span class="hljs-addition">+ , Command</span>
};
<span class="hljs-addition">+ </span>
.command(
Command::new(&quot;yes&quot;)
.alias(&quot;y&quot;)
.action(y),
)
fn y(_c: &amp;Context) {
println!(&quot;yes&quot;);
}
</code></pre>
</p>
<p>Feel free to rewrite or add these values to create your own commands.</p>
<p>Here, the value specified in <code>Command::new</code> means the option name.</p>
<p>In this case, <code>rust yes</code> is the issue of this command.</p>
<p>You can specify omission by <code>alias(&quot;y&quot;)</code>. In this case, <code>rust y</code>.</p>
<p>The <code>action(y)</code> specifies the function <code>fn y</code>, the contents of which will be executed. The processing of the command body is written in <code>action</code>.</p>
<p>By the way, <code>action</code> does not necessarily have to be a function.</p>
<p>For example, try adding the following code in place. The command is <code>rust t</code> or <code>rust t foo</code>.</p>
<div><p class="code-filename">src/main.rs</p></div>
<pre><code class="lang-rust">.command(
Command::new(<span class="hljs-string">&quot;test&quot;</span>)
.alias(<span class="hljs-string">&quot;t&quot;</span>)
.action(|c| <span class="hljs-built_in">println!</span>(<span class="hljs-string">&quot;Hello, {:?}&quot;</span>, c.args)),
)
</code></pre>
<pre><code class="lang-sh">$ ./target/debug/rust t bluesky
Hello, [<span class="hljs-string">&quot;bluesky&quot;</span>]
</code></pre>
<h4 id="cli">cli</h4>
<ul>
<li>CLI</li>
</ul>
<p>The term <code>cli</code> has many meanings. It can refer to the cli tool as described above, or it can refer to terminal operations in general.</p>
<h4 id="cui-and-gui">cui and gui</h4>
<ul>
<li>CUI, GUI</li>
</ul>
<p>There are two kinds of cui and gui. The one we are using now is <code>cui</code>.</p>
<p>The term <code>cli</code> is used in almost the same way.</p>
<p>cui means terminal operation, and gui means operation on graphical os.</p>
<p>It is divided into c-ui and ui, which is just ui. ui stands for user interface.</p>
<p>All common os such as windows and mac are based on gui operation.</p>
<h4 id="author">author</h4>
<p>The author of <a href="https://github.com/ksk001100/seahorse" target="_blank">seahorse</a> is <a href="https://twitter.com/ksk001100" target="_blank">ksk</a>.</p>
<p>Thanks for creating a great framework.</p>
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