QGIS/resources/function_help/json/to_time

{
  "name": "to_time",
  "type": "function",
  "groups": ["Conversions", "Date and Time"],
  "description": "Converts a string into a time object. An optional format string can be provided to parse the string; see <a href='https://doc.qt.io/qt-5/qtime.html#fromString-1'>QTime::fromString</a> for additional documentation on the format.",
  "arguments": [
   {"arg":"string","description":"string representing a time value"},
   {"arg":"format","optional":true,"description":"format used to convert the string into a time"},
   {"arg":"language","optional":true,"description":"language (lowercase, two- or three-letter, ISO 639 language code) used to convert the string into a time"}
  ],
  "examples": [
   { "expression":"to_time('12:30:01')", "returns":"12:30:01"},
   { "expression":"to_time('12:34','HH:mm')", "returns":"12:34:00"},
   { "expression":"to_time('12:34','HH:mm','fr')", "returns":"12:34:00"}
  ]
}