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type-functions.md

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Type Functions

These are functions for detecting the type of data. These functions can be used in the directives filter-row-if-false, filter-row-if-true, filter-row-on, or send-to-error.

Pre-requisite

These can be used only in the filter-* or send-to-error directives.

Namespace

All type-related functions are in the namespace type.

Example Data

Upload to the workspace body an input record such as:

{
    "name": {
        "fname": "Joltie",
        "lname": "Root",
        "mname": null
    },
    "date": "12/17/2019",
    "time": "10:45 PM",
    "boolean": "true",
    "coordinates": [
        12.56,
        45.789
    ],
    "numbers": [
        1,
        2.1,
        3,
        null,
        4,
        5,
        6,
        null
    ],
    "moves": [
        { "a": 1, "b": "X", "c": 2.8},
        { "a": 2, "b": "Y", "c": 232342.8},
        { "a": 3, "b": "Z", "c": null},
        { "a": 4, "b": "U"}
    ],
    "integer": "1",
    "double": "2.8",
    "empty": "",
    "float": 45.6,
    "aliases": [
        "root",
        "joltie",
        "bunny",
        null
    ]
}

Once such a record is loaded, apply these directives before applying any of the functions listed here:

  parse-as-json body
  columns-replace s/body_//g

List of Type Functions

Each function returns true if the condition is met, false otherwise.

Function Condition Example
isDate(string) Tests if string value is a date field filter-row-if-true type:isDate(date)
isTime(string) Tests if string value is a date time filter-row-if-true type:isTime(time)
isBoolean(string) Tests if string value is a booelan field send-to-error !type:isBoolean(boolean)
isNumber(string) Tests if string value is a number field send-to-error !type:isNumber(integer)
isEmpty(string) Tests if string value is empty send-to-error !type:isEmpty(empty)
isDouble(string) Tests if string value is a double field send-to-error !type:isDouble(double)
isInteger(string) Tests if string value is an integer field send-to-error !type:isInteger(integer)