Substitute values of variables in functions that hold their arguments

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

x = 2;
e = Hold[x + 1]

Output

Hold[x + 1]

Step 2

x = 4;
ReleaseHold[e]

Output

Step 3

x = 4;
ReleaseHold[e]

Output

Step 4

x = 2;
Function[y, x + y]

Output

Function[y, x + y]

Step 5

x = 2;
With[{x = x}, Function[y, x + y]]

Output

Function[y, 2 + y]

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Functions used

Function Hold ReleaseHold With

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