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Diffstat (limited to 'docs/doc/block.html')
| -rw-r--r-- | docs/doc/block.html | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/doc/block.html b/docs/doc/block.html index 9ae75ef7..72aaecfd 100644 --- a/docs/doc/block.html +++ b/docs/doc/block.html @@ -228,7 +228,7 @@ ERROR <a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=eyBy4oaQ4oy98J2VqSDii4QgJ3QnPeKKkXIgPyByIDsg8J2VqSB9wqggInRlc3Qi4oC/InRoaXMi">βοΈ</a><pre> <span class='Brace'>{</span> <span class='Value'>r</span><span class='Gets'>β</span><span class='Function'>β½</span><span class='Value'>π©</span> <span class='Separator'>β</span> <span class='String'>'t'</span><span class='Function'>=β</span><span class='Value'>r</span> <span class='Value'>?</span> <span class='Value'>r</span> <span class='Value'>;</span> <span class='Value'>π©</span> <span class='Brace'>}</span><span class='Modifier'>Β¨</span> <span class='String'>"test"</span><span class='Ligature'>βΏ</span><span class='String'>"this"</span> β¨ "tset" "this" β© </pre> -<p>So <code><span class='Value'>r</span></code> is the reversed argument, and if its first character (the last one in <code><span class='Value'>π©</span></code>) is <code><span class='String'>'t'</span></code> then it returns <code><span class='Value'>r</span></code>, and otherwise we abandon that line of reasoning and return <code><span class='Value'>π©</span></code>. This sounds a lot like an if statement. And <code><span class='Brace'>{</span> <span class='Value'>a</span><span class='Function'><</span><span class='Value'>b</span> <span class='Value'>?</span> <span class='Value'>a</span> <span class='Value'>;</span> <span class='Value'>b</span> <span class='Brace'>}</span></code>, which computes <code><span class='Value'>a</span><span class='Function'>β</span><span class='Value'>b</span></code> the hard way, shows how the syntax can be similar to a ternary operator. But <code><span class='Value'>?;</span></code> is more flexible than that. It can support any number of options, with multiple tests for each oneβthe structure below is "if _ and _ then _; else if _ then _; else _".</p> +<p>So <code><span class='Value'>r</span></code> is the reversed argument, and if its first character (the last one in <code><span class='Value'>π©</span></code>) is <code><span class='String'>'t'</span></code> then it returns <code><span class='Value'>r</span></code>, and otherwise we abandon that line of reasoning and return <code><span class='Value'>π©</span></code>. This sounds a lot like an if statement. And <code><span class='Brace'>{</span> <span class='Value'>a</span><span class='Function'><</span><span class='Value'>b</span> <span class='Value'>?</span> <span class='Value'>a</span> <span class='Value'>;</span> <span class='Value'>b</span> <span class='Brace'>}</span></code>, which computes <code><span class='Value'>a</span><span class='Function'>β</span><span class='Value'>b</span></code> the hard way, shows how the syntax can be similar to a ternary operator. This is an immediate block with multiple bodies, something that makes sense with predicates but not headers. But <code><span class='Value'>?;</span></code> offers more possibilities. It can support any number of options, with multiple tests for each oneβthe structure below is "if _ and _ then _; else if _ then _; else _".</p> <a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=VGhpbmcg4oaQIHsg8J2VqeKJpTM/IPCdlaniiaQ4PyAyfPCdlakgOyDwnZWpPTA/IEAgOyDiiJ4gfQoKKOKKoiDiiY0gVGhpbmfCqCkg4oaVMTAgICMgVGFibGUgb2YgYXJndW1lbnRzIGFuZCByZXN1bHRz">βοΈ</a><pre> <span class='Function'>Thing</span> <span class='Gets'>β</span> <span class='Brace'>{</span> <span class='Value'>π©</span><span class='Function'>β₯</span><span class='Number'>3</span><span class='Value'>?</span> <span class='Value'>π©</span><span class='Function'>β€</span><span class='Number'>8</span><span class='Value'>?</span> <span class='Number'>2</span><span class='Function'>|</span><span class='Value'>π©</span> <span class='Value'>;</span> <span class='Value'>π©</span><span class='Function'>=</span><span class='Number'>0</span><span class='Value'>?</span> <span class='String'>@</span> <span class='Value'>;</span> <span class='Number'>β</span> <span class='Brace'>}</span> <span class='Paren'>(</span><span class='Function'>β’</span> <span class='Function'>β</span> <span class='Function'>Thing</span><span class='Modifier'>Β¨</span><span class='Paren'>)</span> <span class='Function'>β</span><span class='Number'>10</span> <span class='Comment'># Table of arguments and results |