NumberValue (Json function): Difference between revisions
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{{Template:Json:NumberValue subtitle}} | {{Template:Json:NumberValue subtitle}} | ||
This function returns the number value of a Json object of the number type. | |||
This | |||
==Syntax== | ==Syntax== | ||
{{Template:Json:NumberValue syntax}} | {{Template:Json:NumberValue syntax}} | ||
| Line 8: | Line 7: | ||
<tr><th>%number</th><td>number</td></tr> | <tr><th>%number</th><td>number</td></tr> | ||
<tr><th>Json</th> | <tr><th>Json</th> | ||
<td>Json object, which | <td>Json object, which must have an underlying number type. If the Json object is doesn't have the number type, an InvalidJsonType exception is thrown.</td></tr> | ||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
<ul> | |||
<li>If the Json object has a string value that can be converted to a number, the Number method will still throw an InvalidJsonType exception. If a Json string value is known to be convertible to a number, extract it with the [[StringValue (Json function)|StringValue]] function and then assign it to a number (probably Float) variable.</li> | |||
<li>The type of a Json object can be determined with the [[Type (Json function)|Type function]].</li> | |||
</ul> | |||
==Examples== | ==Examples== | ||
The following example extracts the number values from items in an array and totals them: | |||
<p class="code">b | |||
%json is object json | |||
%i is float | |||
%total is float | |||
%json = array(1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012) | |||
for %i from 1 to %json:count | |||
%total = %total + %json(%i):numberValue | |||
end for | |||
printText {~=%total} | |||
end | |||
</p> | |||
This prints: | |||
<p class="code">%total=290512 | |||
</p> | |||
==See also== | ==See also== | ||
{{Template:Json:NumberValue footer}} | {{Template:Json:NumberValue footer}} | ||
Revision as of 19:19, 18 February 2015
Get number value of JSON object (Json class)
[Introduced in Model 204 7.6]
This function returns the number value of a Json object of the number type.
Syntax
%number = json:NumberValue Throws InvalidJsonType
Syntax terms
| %number | number |
|---|---|
| Json | Json object, which must have an underlying number type. If the Json object is doesn't have the number type, an InvalidJsonType exception is thrown. |
Usage notes
- If the Json object has a string value that can be converted to a number, the Number method will still throw an InvalidJsonType exception. If a Json string value is known to be convertible to a number, extract it with the StringValue function and then assign it to a number (probably Float) variable.
- The type of a Json object can be determined with the Type function.
Examples
The following example extracts the number values from items in an array and totals them:
b %json is object json %i is float %total is float %json = array(1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012) for %i from 1 to %json:count %total = %total + %json(%i):numberValue end for printText {~=%total} end
This prints:
%total=290512