Handle code symbolically

Workflow 5 steps, run in order in one session. Every step was executed against the engine and the output below is what it produced.

Step 1

Inactive[Join][{1}, Reverse[{2, 4, 3}]]

Output

Inactive[Join][{1}, {3, 4, 2}]

Step 2

expr = Inactivate[Join[{1}, Reverse[{2, 4, 3}]]]

Output

Inactive[Join][{1}, Inactive[Reverse][{2, 4, 3}]]

Step 3

expr//InputForm

Output

InputForm[Inactive[Join][{1}, Inactive[Reverse][{2, 4, 3}]]]

Step 4

expr /. 1 -> 10

Output

Inactive[Join][{10}, Inactive[Reverse][{2, 4, 3}]]

Step 5

Activate[expr /. 1 -> 10]

Output

{10, 3, 4, 2}

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Functions used

Activate Inactivate Inactive Join Reverse

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