small shell funcs

.zshrc

@@ -86,6 +86,17 @@ function condac() {
     conda activate $@
     export HOST=$(hostname)
 }
+function k()
+{
+	echo -n "$(( $@ ))"
+}
+function rscript ()
+{
+	TDIR=$(mktemp -d)
+	rustc -v -C lto -C opt-level=3 $1 -o $TDIR/rscript_executable
+	$TDIR/rscript_executable ${@:2}
+	rm -rf $TDIR
+}
 # Call Python and execute multiple statements from args
 function py() {
     python <<< "