F# Interactive Options
This topic describes the command-line options supported by F# Interactive, fsi.exe. F# Interactive accepts many of the same command line options as the F# compiler, but also accepts some additional options.
Using F# Interactive for Scripting
F# Interactive, fsi.exe, can be launched interactively, or it can be launched from the command line to run a script. The command line syntax is
fsi.exe [options] [script-file [arguments] ]
The file extension for F# script files is fsx.
Table of F# Interactive Options
The following table summarizes the options supported by F# Interactive. You can set these options on the command-line or through the Visual Studio IDE. To set these options in the Visual Studio IDE, open the Tools menu, select Options..., then expand the F# Tools node and select F# Interactive.
Where lists appear in F# Interactive option arguments, list elements are separated by semicolons (;).
Option |
Description |
|---|---|
-- |
Used to instruct F# Interactive to treat remaining arguments as command line arguments to the F# program or script, which you can access in code by using the list fsi.CommandLineArgs. |
--checked[+|-] |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--codepage:<int> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--crossoptimize[+|-] |
Enable or disable cross-module optimizations. |
--debug[+|-] --debug:[full|pdbonly] -g[+|-] -g:[full|pdbonly] |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--define:<string> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--exec |
Instructs F# interactive to exit after loading the files or running the script file given on the command line. |
--fullpaths |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--gui[+|-] |
Enables or disables the Windows Forms event loop. The default is enabled. |
--help -? |
Used to display the command line syntax and a brief description of each option. |
--lib:<folder-list> -I:<folder-list> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--load:<filename> |
Compiles the given source code at startup and loads the compiled F# constructs into the session. If the target source contains scripting directives such as #use or #load, then you must use --use or #use instead of --load or #load. |
--mlcompatibility |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--noframework |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#) |
--nologo |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--nowarn:<warning-list> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--optimize[+|-] |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--quiet |
Suppress F# Interactive's output to the stdout stream. |
--quotations-debug |
Specifies that extra debugging information should be emitted for expressions that are derived from F# quotation literals and reflected definitions. The debug information is added to the custom attributes of an F# expression tree node. See Code Quotations (F#) and Expr.CustomAttributes. |
--readline[+|-] |
Enable or disable tab completion in interactive mode. |
--reference:<filename> -r:<filename> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--tailcalls[+|-] |
Enable or disable the use of the tail IL instruction, which causes the stack frame to be reused for tail recursive functions. This option is enabled by default. |
--use:<filename> |
Tells the interpreter to use the given file on startup as initial input. |
--utf8output |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--warn:<warning-level> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--warnaserror[+|-] |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
--warnaserror[+|-]:<int-list> |
Same as the fsc.exe compiler option. For more information, see Compiler Options (F#). |
Related Topics
Title |
Description |
|---|---|
Describes command line options available for the F# compiler, fsc.exe. |