YAML 等效于 JSON 中的对象数组 [英] YAML equivalent of array of objects in JSON
问题描述
我有一个 JSON 对象数组,我正在尝试将其转换为 YAML.
I have a JSON array of objects that I'm trying to convert to YAML.
{"AAPL": [
{
"shares": -75.088,
"date": "11/27/2015"
},
{
"shares": 75.088,
"date": "11/26/2015"
},
]}
在 YAML 中是否有不只是 JSON 的等效表示?我想做类似的事情
Is there an equivalent representation in YAML that isn't just JSON? I'd like to do something like
AAPL:
- :
shares: -75.088
date: 11/27/2015
- :
shares: 75.088
date: 11/26/2015
但我想出的最干净的东西是
but the cleanest thing I've come up with is
AAPL:
- {
shares: -75.088,
date: 11/27/2015
}
{
shares: 75.088,
date: 11/26/2015
}
推荐答案
TL;DR
你想要这个:
AAPL:
- shares: -75.088
date: 11/27/2015
- shares: 75.088
date: 11/26/2015
映射
JSON 对象的 YAML 等价物是一个映射,如下所示:
Mappings
The YAML equivalent of a JSON object is a mapping, which looks like these:
# flow style
{ foo: 1, bar: 2 }
# block style
foo: 1
bar: 2
注意块映射中键的第一个字符必须在同一列中.演示:
Note that the first characters of the keys in a block mapping must be in the same column. To demonstrate:
# OK
foo: 1
bar: 2
# Parse error
foo: 1
bar: 2
序列
YAML 中 JSON 数组的等价物是一个序列,它看起来像以下任一(等价的):
Sequences
The equivalent of a JSON array in YAML is a sequence, which looks like either of these (which are equivalent):
# flow style
[ foo bar, baz ]
# block style
- foo bar
- baz
在块序列中,-
s 必须在同一列中.
In a block sequence the -
s must be in the same column.
让我们将您的 JSON 转换为 YAML.这是您的 JSON:
Let's turn your JSON into YAML. Here's your JSON:
{"AAPL": [
{
"shares": -75.088,
"date": "11/27/2015"
},
{
"shares": 75.088,
"date": "11/26/2015"
},
]}
顺便说一句,YAML 是 JSON 的超集,所以以上已经是有效的 YAML——但让我们实际使用 YAML 的特性让它更漂亮.
As a point of trivia, YAML is a superset of JSON, so the above is already valid YAML—but let's actually use YAML's features to make this prettier.
从里到外,我们有这样的对象:
Starting from the inside out, we have objects that look like this:
{
"shares": -75.088,
"date": "11/27/2015"
}
等效的 YAML 映射是:
The equivalent YAML mapping is:
shares: -75.088
date: 11/27/2015
我们在一个数组(序列)中有两个这样的:
We have two of these in an array (sequence):
- shares: -75.088
date: 11/27/2015
- shares: 75.088
date: 11/26/2015
注意 -
是如何排列的,映射键的第一个字符是如何排列的.
Note how the -
s line up and the first characters of the mapping keys line up.
最后,这个序列本身就是一个带有键AAPL
的映射中的一个值:
Finally, this sequence is itself a value in a mapping with the key AAPL
:
AAPL:
- shares: -75.088
date: 11/27/2015
- shares: 75.088
date: 11/26/2015
解析它并将其转换回 JSON 会产生预期的结果:
Parsing this and converting it back to JSON yields the expected result:
{
"AAPL": [
{
"date": "11/27/2015",
"shares": -75.088
},
{
"date": "11/26/2015",
"shares": 75.088
}
]
}
您可以看到它(并以交互方式对其进行编辑)这里一>.
You can see it (and edit it interactively) here.
这篇关于YAML 等效于 JSON 中的对象数组的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!