NFun CLI (Funny CLI)

Run NFun expressions using the console app at: src/ConsoleAppExample/ConsoleAppExample.csproj

Usage

# Evaluate an expression
dotnet run --project src/ConsoleAppExample/ConsoleAppExample.csproj --no-build -p:SignAssembly=false -- -e "$ARGUMENTS"

# Evaluate with TIC trace (shows constraint solving steps)
dotnet run --project src/ConsoleAppExample/ConsoleAppExample.csproj --no-build -p:SignAssembly=false -- -t -e "$ARGUMENTS"

Flags

Flag	Description
-e, --eval	Evaluate expression
-s, --script	Run script from file
-t, --trace	Show TIC solver trace output
-h, --help	Show help

Important

• Always use -p:SignAssembly=false (SNK key is missing)
• Use --no-build if you've recently built; otherwise omit it
• If you get assembly load errors, rebuild NFun first: dotnet build src/NFun/NFun.csproj -p:SignAssembly=false -f net6.0
• Multi-line expressions: use \r as line separator in the expression string
• The -t flag enables TraceLog.IsEnabled which shows all TIC solving phases: toposorted, PullConstraints, PushConstraints, Destructed, Finalized

Examples

# Simple expression
dotnet run ... -- -e "y = 1 + 2"

# Optional types
dotnet run ... -- -e "y = if(true) 42 else none"

# With trace to debug type inference
dotnet run ... -- -t -e "y = [1,none,3].map(rule it ?? 0)"

# Multi-line
dotnet run ... -- -e "f(x) = x * 2\r y = f(3)"