blocks|key|344229|text|您可以使用inspect方法：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|344230|a=["value1",+"value2",+"value3"]
puts+a.inspect|code-block|syntax|javascript|344231|或者，更好的方法是使用pp+(漂亮打印)库：|344232|require+'pp'
a=["value1",+"value2",+"value3"]
pp+a|344233|entityMap^0|5|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

You can either use the <code>inspect</code> method:

<pre><code>a=["value1", "value2", "value3"]
puts a.inspect
</code></pre>

Or, even better, use the pp (pretty print) lib:

<pre><code>require 'pp'
a=["value1", "value2", "value3"]
pp a
</code></pre>

blocks|key|344244|text|试试.inspect|type|unstyled|depth|inlineStyleRanges|entityRanges|data|344245|>>+a+=+["value1",+"value2",+"value3"]
=>+["value1",+"value2",+"value3"]
>>+a.inspect
=>+"[\"value1\",+\"value2\",+\"value3\"]"
>>+a+=+{"key1"+=>+"value1"}
=>+{"key1"=>"value1"}
>>+a.inspect
=>+"{\"key1\"=>\"value1\"}"|code-block|syntax|javascript|344246|您还可以使用p()方法打印它们：|344247|>>+p+a
{"key1"=>"value1"}|344248|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Try .inspect

<pre><code>&gt;&gt; a = ["value1", "value2", "value3"]
=&gt; ["value1", "value2", "value3"]
&gt;&gt; a.inspect
=&gt; "[\"value1\", \"value2\", \"value3\"]"
&gt;&gt; a = {"key1" =&gt; "value1"}
=&gt; {"key1"=&gt;"value1"}
&gt;&gt; a.inspect
=&gt; "{\"key1\"=&gt;\"value1\"}"
</code></pre>

You can also use the p() method to print them:

<pre><code>&gt;&gt; p a
{"key1"=&gt;"value1"}
</code></pre>

blocks|key|344253|text|您可以做的另一件事是使用y方法，该方法将输入转换为Yaml。这会产生非常好的输出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|344254|>>+data+=+{+'dog'+=>+'Flemeale',+'horse'+=>+'Gregoire',+'cow'+=>+'Fleante'+}
=>+{"cow"=>"Fleante",+"horse"=>"Gregoire",+"dog"=>"Flemeale"}
>>+y+data
---+
cow:+Fleante
horse:+Gregoire
dog:+Flemeale|code-block|syntax|javascript|344255|entityMap^0|C|1|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Another thing you can do is use the <code>y</code> method which converts input into Yaml. That produces pretty nice output...

<pre><code>&gt;&gt; data = { 'dog' =&gt; 'Flemeale', 'horse' =&gt; 'Gregoire', 'cow' =&gt; 'Fleante' }
=&gt; {"cow"=&gt;"Fleante", "horse"=&gt;"Gregoire", "dog"=&gt;"Flemeale"}
&gt;&gt; y data
--- 
cow: Fleante
horse: Gregoire
dog: Flemeale
</code></pre>

blocks|key|349143|text|我个人选择的工具是‘漂亮的打印’和pp方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|349144|require+'pp'+#+<-+'Pretty+Print'+Included+in+ruby+standard+library
pp({+:hello+=>+:world,+:this+=>+['is',+'an',+'array']+})
=>+{:hello=>:world,+:this=>["is",+"an",+"array"]}+|code-block|syntax|javascript|349145|entityMap^0|H|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

My personal tool of choice for this is 'Pretty Print' and the <code>pp</code> method

<pre><code>require 'pp' # &lt;- 'Pretty Print' Included in ruby standard library
pp({ :hello =&gt; :world, :this =&gt; ['is', 'an', 'array'] })
=&gt; {:hello=&gt;:world, :this=&gt;["is", "an", "array"]} 
</code></pre>

blocks|key|3121306|text|漂亮的打印效果很好，但Awesome_Print+gem更好！你将不得不使用require+awesome_print，但它处理嵌套的散列和数组非常漂亮，并在终端中使用'ap‘而不是'p’来放置输出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3121307|您还可以将其包含在~/.irbrc中，以将其作为显示对象的默认方法：|3121308|require+"awesome_print"
AwesomePrint.irb!|code-block|syntax|javascript|3121309|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/michaeldv/awesome_print^0|12|L|B|D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|11|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

The pretty print works well, but the <a href="https://github.com/michaeldv/awesome_print">Awesome_Print</a> gem is even better! You will have to <code>require awesome_print</code> but it handles nested hashes and arrays beautifully plus colors them in the Terminal using 'ap' instead of 'p' to puts the output.

You can also include it in your ~/.irbrc to have this as the default method for displaying objects:

<pre><code>require "awesome_print"
AwesomePrint.irb!
</code></pre>

When I make a new array/hash in irb, it prints out a nice format to show the structure, ex.

<pre><code>["value1", "value2", "value3"]
{"key1" =&gt; "value1"}
</code></pre>

... but when I try to print out my variables using <code>puts</code>, I get them collapsed:

<pre><code>value1
value2
value3
key1
value1
</code></pre>

I gather that <code>puts</code> is not the right command for what I want, but what is? I want to be able to view my variables in irb in the first format, not the second.

Ruby: How to make IRB print structure for Arrays and Hashes

当我在irb中创建一个新的数组/散列时，它会打印出一种很好的格式来显示结构，例如。["value1", "value2", "value3"]{"key1" => "value1"}..。但是，当我尝试使用puts打印出变量时，它们会折叠起来：value1value2value3key1value1我猜puts不是我想...

问Ruby:如何为数组和散列设置IRB打印结构
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