json.fields: Difference between revisions
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(New page: ==Function json.fields== '''Introduced in MapTool 1.3b49''' Returns the fields (keys) for a json object or the indexes for a json array as a string list. The type of the value returned...) |
Verisimilar (talk | contribs) m (Applied Template:MacroFunction) |
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= | {{MacroFunction | ||
|name=json.fields | |||
|version=1.3b49 | |||
|description= | |||
Returns the fields (keys) for a json object or the indexes for a json array as a string list. The type of the value returned depends on the delimiter parameter. | Returns the fields (keys) for a json object or the indexes for a json array as a string list. The type of the value returned depends on the delimiter parameter. | ||
* If the delimiter is not specified then a [[Macros:string list|string list]] is returned with the default value of ',' is used. | * If the delimiter is not specified then a [[Macros:string list|string list]] is returned with the default value of ',' is used. | ||
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* Otherwise a [[Macros:string list|string list]] is returned with the delimiter passed in. | * Otherwise a [[Macros:string list|string list]] is returned with the delimiter passed in. | ||
|usage= | |||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
[h: strList = json.fields(jobj)] | [h: strList = json.fields(jobj)] | ||
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</source> | </source> | ||
|example= | |||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
[h:a=json.fromStrProp("a=1;b=44;c=12")] [r:json.fields(a)] | [h:a=json.fromStrProp("a=1;b=44;c=12")] [r:json.fields(a)] | ||
| Line 31: | Line 26: | ||
0,1,2,3 | 0,1,2,3 | ||
["a","c","b"] | ["a","c","b"] | ||
}} | |||
[[Category:JSON Function]] | |||
Revision as of 02:03, 9 March 2009
json.fields() Function
• Introduced in version 1.3b49
Returns the fields (keys) for a json object or the indexes for a json array as a string list. The type of the value returned depends on the delimiter parameter.
- If the delimiter is not specified then a string list is returned with the default value of ',' is used.
- If the delimiter "json" then a json array is returned.
- Otherwise a string list is returned with the delimiter passed in.
Usage
[h: strList = json.fields(jobj)]
[h: strList = json.fields(jobj, delim)]
[h: jobj = json.fields(jobj, 'json')]Example
[h:a=json.fromStrProp("a=1;b=44;c=12")] [r:json.fields(a)]
[h:a=json.fromList("a,1,g,4")][r:json.fields(a)]
[h:a=json.fromStrProp("a=1;b=44;c=12")] [r:json.fields(a, "json")]Returns
a,c,b 0,1,2,3["a","c","b"]