Simplify the StringParse.h with C++17

Simplify the StringParse.h with C++17

This merge request affects 4 packages:

• Generators/GeneratorUtils
• Generators/Hijing_i
• Generators/Hydjet_i
• Generators/Starlight_i

Affected files list will not be printed in this case

added Generators main review-pending-level-1 labels

CI Result FAILURE (hash fdf31e5e)

	Athena	AthGeneration
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 9830] (remote access info)

added 822 commits

• fdf31e5e...23b416c3 - 821 commits from branch atlas:main
• 8e081c3e - Merge branch athena:main into parsinggu

Compare with previous version

This merge request affects 4 packages:

• Generators/GeneratorUtils
• Generators/Hijing_i
• Generators/Hydjet_i
• Generators/Starlight_i

Affected files list will not be printed in this case

added 1 commit

• 85dc4702 - Update StringParse.h

Compare with previous version

This merge request affects 4 packages:

• Generators/GeneratorUtils
• Generators/Hijing_i
• Generators/Hydjet_i
• Generators/Starlight_i

Affected files list will not be printed in this case

CI Result SUCCESS (hash 85dc4702)

	Athena	AthGeneration
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 9835] (remote access info)

CI Result FAILURE (hash 8e081c3e)

	Athena	AthGeneration
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 9834] (remote access info)

MR looks fine from L1 perspective, CI shows no problems - approving

Cheers, Qiyu, L1

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit 86d95f79