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depth ← {+\1 ¯1 0['()'⍳⍵]}
| a. |
Find an equivalent expression
for 1 ¯1 0['()'⍳⍵] .
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| b. |
Write a function to produce a boolean vector which indicates whether an element
of the character vector argument is between quotes.
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| c. |
Modify depth
to produce the nesting depth for parentheses not within quotes.
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