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Keywords

Builtins you will meet first

print(…)

write a line to output

len(x)

the length of a string, an array, or a map

range(a, b)

the integers from a up to b

map · filter · reduce

reshape an array with a function

keys(m) · has(m, k)

walk and probe a map

try · is_error(x)

catch a failure as a value

All 53 builtins on one page →