| numbers:
| {0}
| {12}
| {.87}
| {39.12}

| strings:
| {"foo"}

| tuple:
| {[4,8,9]}

| struct:
| {{7:4,2:8,1:9}}

| symbols:
| {:ab}

| anchor:
| {#jdfe}
| {#foo bar}

| boolean:
| {false}
| {true}

| nil:
| {()}

| pair:
| {6:8}
| {("d"):([])}

| function:
| {$12}
| {$(x)x}