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# Boolean Values
Boolean values have the type `Bool` and can be either `yes` ("true") or `no`
("false").
# Boolean Functions
This documentation provides details on boolean functions available in the API.
## `from_text`
**Description:**
Converts a string representation of a boolean value into a boolean. Acceptable
boolean values are case-insensitive variations of `yes`/`no`, `y`/`n`,
`true`/`false`, `on`/`off`.
**Signature:**
```tomo
func from_text(text: Text -> Bool?)
```
**Parameters:**
- `text`: The string containing the boolean value.
**Returns:**
`yes` if the string matches a recognized truthy boolean value; otherwise return `no`.
**Example:**
```tomo
>> Bool.from_text("yes")
= yes?
>> Bool.from_text("no")
= no?
>> Bool.from_text("???")
= !Bool
```
---
## `random`
**Description:**
Generates a random boolean value based on a specified probability.
**Signature:**
```tomo
func random(p: Float = 0.5 -> Bool)
```
**Parameters:**
- `p`: The probability (between `0` and `1`) of returning `yes`. Default is `0.5`.
**Returns:**
`yes` with probability `p`, and `no` with probability `1 - p`.
**Example:**
```tomo
>> Bool.random(70%) // yes (with 70% probability)
```
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