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"是否可以在 IntelliJ IDEA 中编写 lambda 字母 (λ)？"

[英]Is it possible to write lambda letter (λ) in IntelliJ IDEA?

原文 2015-12-02 15:59:50 5 2 java/ intellij-idea

I would like to use this interface: http:\/\/javaslang.com\/javadoc\/2.0.0-RC2\/javaslang\/%CE%BB.html<\/a>我想使用这个接口：http: \/\/javaslang.com\/javadoc\/2.0.0-RC2\/javaslang\/%CE%BB.html<\/a>

Fortunately auto completion works, if I start from package name.幸运的是，如果我从包名开始，自动完成工作。 But is it possible to write lamda greek letter in IntelliJ IDEA or generally in any editor?但是是否可以在 IntelliJ IDEA 或通常在任何编辑器中编写 lamda 希腊字母？

2 个解决方案

This is all about your keyboard and OS, and not specific to Intellij IDEA.这完全与您的键盘和操作系统有关，而不是特定于 Intellij IDEA。 You can create one by copy and pasting, which is pretty easy.您可以通过复制和粘贴来创建一个，这非常容易。 If you want to insert it directly then use the way of typing special characters specific to your platform (Windows, Mac, Linux, ...).如果您想直接插入它，请使用键入特定于您的平台（Windows、Mac、Linux 等）的特殊字符的方式。

So for example on Mac you could:因此，例如在 Mac 上，您可以：

Do Edit > Special Characters and click on the gear wheel at the top left, select Customize and check the box for Greek.执行编辑>特殊字符并单击左上角的齿轮，选择自定义并选中希腊语框。 Double click or drag drop to input.双击或拖放输入。<\/li>
Go to system prefs\/language & text\/input sources and check the box for Greek, plus the box for Show Input Menu in Finder.转到系统首选项\/语言和文本\/输入源并选中希腊语框，以及在 Finder 中显示输入菜单框。 Then select Greek from the "flag" menu at the top right of the screen and type.然后从屏幕右上角的“标志”菜单中选择希腊语并输入。<\/li><\/ul>
There are also some suggestions on the Wikipedia article on entering special characters<\/a> , though IntelliJ may intercept some of these. 关于输入特殊字符的 Wikipedia 文章<\/a>也有一些建议，尽管 IntelliJ 可能会拦截其中一些。
I have to admit, I always just copy and paste.我不得不承认，我总是只是复制和粘贴。
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You can express any Unicode character anywhere in Java source code via the \? form.您可以通过 \? 形式在 Java 源代码中的任何位置表示任何 Unicode 字符。 It is not just for String<\/code> s and char<\/code> s.它不仅适用于String<\/code> s 和char<\/code> s。 (For characters outside the BMP, you need two of those, forming a surrogate pair.) Inasmuch as there sometimes are multiple characters with similar glyphs, Unicode escapes have the advantage of being totally unambiguous. （对于 BMP 之外的字符，您需要其中的两个，形成代理对。）由于有时有多个字符具有相似的字形，Unicode 转义具有完全明确的优点。

Presumably the character wanted in this case is the one Unicode names "Greek small letter lamda", U+03BB, which you can express anywhere in Java source code as \λ<\/code> .大概在这种情况下想要的字符是一个 Unicode 名称“希腊小写字母 lamda”，U+03BB，您可以在 Java 源代码中的任何地方将其表示为\λ<\/code> 。

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