Documentation

⎕FAVAIL: File System Available

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Documentation

Release Notes
Release Notes
- v20.0 Release Notes
  v20.0 Release Notes
  - Introduction
  - System Requirements
  - Announcements
    
    Announcements
    
    Deprecated Functionality
  - New and Enhanced Features
  - Minor Updates and Bug Fixes
  - Interoperability
- Earlier Release Notes
  Earlier Release Notes
  - Dyalog v19.0 Release Notes
    Dyalog v19.0 Release Notes
    
    Introduction
    Introduction
    
    Key Features
    
    Extension to Native File Functions
    
    Lexical Scope in Scripts
    
    Session Gutter
    
    Source as Typed
    
    Bug Fixes
    
    Announcements
    
    System Requirements
    
    Interoperability
    
    Configuration Parameters
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    DYALOG_GUTTER_ENABLE
    
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    Log_File
    
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    Language Changes
    
    File Hold
    
    Fix Script
    
    Allocate Token Range
    
    Memory Manager Statistics
    
    Enable Compression of Large Components
    
    Discard Source Information
    
    Discard Source Code
    
    Hash Table Size
    
    Lookup Table Size
    
    Object Reference Changes
    Object Reference Changes
    
    AllowContextMenu
    
    ExecuteJavaScript
    
    GetZoomLevel
    
    IsLoading
    
    LoadEnd
    
    SetZoomLevel
Core Reference
Core Reference
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    Idiom List
    
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    Complex Numbers
    
    128 Bit Decimal Floating-Point Support
    
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    Overview
    
    Namespace Syntax
    
    Namespace Reference Evaluation
    
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    Namespace References
    
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    Arrays of Namespace References
    
    Distributed Assignment
    
    Distributed Functions
    
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    Serialising Namespaces
    
    External Variables
    
    Component Files
    
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  - Deprecated Functionality
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    Introduction
    
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    Introduction
    
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    Simple Instance Properties
    
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    Numbered Properties
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    Introduction
    
    Example
    
    The Default Property
    
    ComponentFile Class
    
    Keyed Properties
    Keyed Properties
    
    Introduction
    
    Example 1
    
    Example 2
    
    Interfaces
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    Introduction
    
    Example
    
    Including Namespaces in Classes
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    Example
    
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    GolfService Example
    
    Namespace Scripts
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    DiaryStuff Example
    
    Including Script Files
    
    Class Declaration Statements
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    Introduction
    
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    Property Section
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    PropertyArguments Class
    
    PropertyGet Function Syntax
    
    PropertySet Function Syntax
    
    PropertyShape Function Syntax
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    Threads & External Functions
    
    Synchronising Threads
    
    Semaphore Example
    
    Latch Example
    
    Debugging
  - Triggers
    Triggers
    
    Introduction
    
    Example
    
    Global Triggers
  - Native Files
  - Component Files
    Component Files
    
    Introduction
    
    Component Files
    
    Programming Techniques
    
    File Design
    
    Internal Structure
    
    The Effect of Buffering
    
    Integrity and Security
  - Error Trapping
    Error Trapping
    
    Standard Error Action
    
    Error Trapping
    
    Error Trapping Examples
    
    Signalling Events
    
    Handling Unexpected Errors
  - Error Messages
    Error Messages
    
    Introduction
    
    APL Error Messages
    
    Operating System Error Messages
    
    Windows Operating System Error Messages
    
    APL Error Messages (A-Z)
    APL Error Messages (A-Z)
    
    bad ws
    
    cannot create name
    
    clear ws
    
    copy incomplete
    
    DEADLOCK
    
    defn error
    
    DOMAIN ERROR
    
    EOF INTERRUPT
    
    EXCEPTION
    
    FIELD CONTENTS RANK ERROR
    
    FIELD CONTENTS TOO MANY COLUMNS
    
    FIELD POSITION ERROR
    
    FIELD CONTENTS TYPE MISMATCH
    
    FIELD TYPE BEHAVIOUR UNRECOGNISED
    
    FIELD ATTRIBUTES RANK ERROR
    
    FIELD ATTRIBUTES LENGTH ERROR
    
    FULL SCREEN ERROR
    
    KEY CODE UNRECOGNISED
    
    KEY CODE RANK ERROR
    
    KEY CODE TYPE ERROR
    
    FORMAT FILE ACCESS ERROR
    
    FORMAT FILE ERROR
    
    FILE ACCESS ERROR
    
    FILE ACCESS ERROR CONVERTING
    
    FILE COMPONENT DAMAGED
    
    FILE DAMAGED
    
    FILE FULL
    
    FILE INDEX ERROR
    
    FILE NAME ERROR
    
    FILE NAME QUOTA USED UP
    
    FILE SYSTEM ERROR
    
    FILE SYSTEM NO SPACE
    
    FILE SYSTEM NOT AVAILABLE
    
    FILE SYSTEM TIES USED UP
    
    FILE TIE ERROR
    
    FILE TIED
    
    FILE TIED REMOTELY
    
    FILE TIE QUOTA USED UP
    
    FORMAT ERROR
    
    HOLD ERROR
    
    incorrect command
    
    INDEX ERROR
    
    INTERNAL ERROR
    
    INTERRUPT
    
    is name
    
    LENGTH ERROR
    
    LIMIT ERROR
    
    NONCE ERROR
    
    NO PIPES
    
    name is not a ws
    
    Name already exists
    
    Namespace does not exist
    
    not copied name
    
    not found name
    
    not saved this ws is name
    
    PROCESSOR TABLE FULL
    
    RANK ERROR
    
    RESIZE
    
    name saved date time
    
    SYNTAX ERROR
    
    sys error number
    
    TIMEOUT
    
    TRANSLATION ERROR
    
    TRAP ERROR
    
    too many names
    
    VALUE ERROR
    
    warning duplicate label
    
    warning duplicate name
    
    warning pendent operation
    
    warning label name present
    
    warning unmatched brackets
    
    warning unmatched parentheses
    
    was name
    
    WS FULL
    
    ws not found
    
    ws too large
    
    Operating System Error Messages (A-Z)
    Operating System Error Messages (A-Z)
    
    FILE ERROR 1 Not owner
    
    FILE ERROR 2 No such file
    
    FILE ERROR 5 I O error
    
    FILE ERROR 6 No such device
    
    FILE ERROR 13 Permission denied
    
    FILE ERROR 20 Not a directory
    
    FILE ERROR 21 Is a directory
    
    FILE ERROR 23 File table overflow
    
    FILE ERROR 24 Too many open
    
    FILE ERROR 26 Text file busy
    
    FILE ERROR 27 File too large
    
    FILE ERROR 28 No space left
    
    FILE ERROR 30 Read only file
    
    System Errors
  - APLMon
    APLMon
    
    Introduction
    
    Using APLMON
    
    APLMON output
    
    Special syntax
    
    Notes
Dyalog for Microsoft Windows
Dyalog for Microsoft Windows
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About
About

⎕FAVAIL FAVAIL

File System Available R←⎕FAVAIL

⎕FAVAIL returns the Boolean scalar value 1. This function is provided only for compatibility with other implementations of APL.

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