Nushell
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GitHub
Get Nu!
Getting Started
  • The Nushell Book
  • Command Reference
  • Cookbook
  • Language Reference Guide
  • Contributing Guide
Blog
  • English
  • 中文
  • Deutsch
  • Français
  • Español
  • 日本語
  • Português do Brasil
  • Русский язык
GitHub
  • Language Reference Guide
    • Readme
    • Types in the Nu Language
      • Basic Types
        • Any
        • Boolean
        • Integer
        • Float
        • Filesize
        • Duration
        • Datetime
        • Range
        • String
        • Record
        • List
        • Table
        • Closure
        • Nothing
        • Binary
        • Glob
        • Cell-Path
      • Other Data Types

        • Types that cannot be used to declare variables
          • Path
        • Types which are not declarable
          • Error
          • CustomValue
          • Block
      • Type signatures
      • Commands that interact with types
    • Operators
    • Flow control
      • if/else
      • loop
      • while
      • match
      • try/catch
      • break
      • return
      • continue
    • Filters
      • each and par-each
      • Filters to select subsets of data
      • where and filter
      • Understanding the difference between get and select
    • Custom Commands
    • Declarations
    • Variable Scope
    • Strings and Text Formatting
    • Helpers and debugging commands
    • Pipelines
    • MIME Types for Nushell

Boolean

Description:A logical data type that can have only True or False values
Annotation:bool
Literal syntax:Either a literal true or false
Casts:into bool
See also:Types of Data - Booleans

Common commands that can be used with bool

  • if, while

  • match (in clauses where the expression matches the clause expression, or the _ value which is always true)

  • is-empty, is-not-empty

  • is-admin

  • is-terminal

The following commands take a closure as their main argument. The return value from the closure must be a boolean:

  • where/filter
  • any, all, skip until, skip while, take until, take while

Common operators that can be used with bool

  • ==, !=, <, <=, >, >=
  • and, or, not
  • in
  • Regex comparison operators: =~, !~ <regex>
  • String comparison operators: ends-with, starts-with
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Contributors: NotTheDr01ds, fdncred
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