[Tutorial,PWGCF,PWGEM,PWGLF,PWGUD] Use const& and std::move to avoid copies

[vkucera]

Mostly done automatically by Clang-Tidy.

[github-actions]

O2 linter results: ❌ 308 errors, ⚠️ 163 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 8244017 at 2026-09-02 02:24:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 23 errors and 170 warnings.'
Found 23 errors and 170 warnings.
++ [[ 23 -gt 0 ]]
++ cat /sw/BUILD/6451af4b3807ffae8fb77705bb6aceba4f1029ae/O2Physics-code-check/errors.txt
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:19:7: error: variable 'mee' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:20:7: error: variable 'mee_orig' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:21:9: error: variable 'histNames' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:23:9: error: variable 'histLegends' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:30:3: error: suspicious string literal, probably missing a comma [bugprone-suspicious-missing-comma,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:37:16: error: do not use C-style cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-cstyle-cast,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:51:5: error: do not use C-style cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-cstyle-cast,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:52:17: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:54:20: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:55:20: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/PWGLF/Resonance/resonancesCombine.cxx:40:8: error: constructor does not initialize these fields: rapidity, mass, pT, paircharge [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
Tutorials/PWGLF/Resonance/resonances_step1.cxx:35:8: error: constructor does not initialize these fields: rapidity, mass, pT, paircharge [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
Tutorials/PWGLF/Resonance/resonances_step2.cxx:39:8: error: constructor does not initialize these fields: rapidity, mass, pT, paircharge [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
Tutorials/PWGLF/Resonance/resonances_step6.cxx:38:8: error: constructor does not initialize these fields: rapidity, mass, pT, paircharge [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:95:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:96:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:97:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:98:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:99:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:100:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:101:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:102:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
Tutorials/Skimming/spectraTPCReference.cxx:103:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
++ [[ 170 -gt 0 ]]
++ cat /sw/BUILD/6451af4b3807ffae8fb77705bb6aceba4f1029ae/O2Physics-code-check/warnings.txt
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:103:31: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:105:43: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:107:32: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:109:35: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:111:32: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:113:47: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:115:35: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:117:30: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGCF/EventPlane/src/qVectorstutorial.cxx:119:29: warning: statement should be inside braces [readability-braces-around-statements]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:19:1: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:20:1: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:21:1: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:23:1: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:33:30: warning: do not declare C-style arrays, use 'std::span' instead [modernize-avoid-c-arrays]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:60:20: warning: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion]
Tutorials/PWGEM/Cocktail/plotLFCocktail.C:62:25: warning: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion]
Tutorials/PWGLF/Resonance/resonancesCombine.cxx:70:21: warning: redundant explicit casting to the same type 'int' as the sub-expression, remove this casting [readability-redundant-casting]
[0 more errors; see full log]

Full log here.

[alibuild]

Error while checking build/O2Physics/o2 for 8244017 at 2026-09-02 16:14:

## sw/BUILD/O2Physics-latest/log
2026-09-02T06:15:40.747+0200 [1528:140169257610880] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "ActionCache.GetActionResult()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:15:40.836+0200 [1528:140169257610880] [executioncontext.cpp:544] [ERROR] Error while querying action cache at "http://localhost:8980": 14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame
2026-09-02T06:18:05.662+0200 [1528:140169257610880] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "FindMissingBlobs()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:15:41.649+0200 [1571:140193461718656] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "ActionCache.GetActionResult()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:15:41.650+0200 [1571:140193461718656] [executioncontext.cpp:544] [ERROR] Error while querying action cache at "http://localhost:8980": 14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame
2026-09-02T06:18:11.402+0200 [1571:140193461718656] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "FindMissingBlobs()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:15:40.567+0200 [1549:139924123364992] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "ActionCache.GetActionResult()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:15:40.836+0200 [1549:139924123364992] [executioncontext.cpp:544] [ERROR] Error while querying action cache at "http://localhost:8980": 14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame
2026-09-02T06:19:49.263+0200 [1549:139924123364992] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "FindMissingBlobs()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:18:39.495+0200 [1648:140101574778496] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "ActionCache.GetActionResult()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:18:39.495+0200 [1648:140101574778496] [executioncontext.cpp:544] [ERROR] Error while querying action cache at "http://localhost:8980": 14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame
2026-09-02T06:18:28.812+0200 [1613:140691822587520] [buildboxcommon_grpcretrier.cpp:177] [ERROR] Retry limit (0) exceeded for "ActionCache.GetActionResult()", last gRPC error was [14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame]
2026-09-02T06:18:28.813+0200 [1613:140691822587520] [executioncontext.cpp:544] [ERROR] Error while querying action cache at "http://localhost:8980": 14: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:8980: connection attempt timed out before receiving SETTINGS frame

Full log here.