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#!/bin/bash
s="make_pair(obj1.get<1>(), obj2.get<2>());"
sed -E 's/([[:alnum:]_]*)\.get(<[^><]*>)\(\)/get\2(\1)/g' <<< "$s"

Success #stdin #stdout 0s 19632KB

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Standard input is empty

stdout

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make_pair(get<1>(obj1), get<2>(obj2));

https://ideone.com/F9spML

language:

Bash (bash 5.0.3)

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