StarMirror/CppCoreGuidelines
1
0
Fork 0
mirror of https://github.com/isocpp/CppCoreGuidelines.git synced 2024-03-22 13:30:58 +08:00
Code Issues Projects Releases Wiki Activity

exceptionsand const

Browse Source 
Added to E.15
This commit is contained in:
Bjarne Stroustrup 2017-05-17 14:25:13 -04:00
parent 81493f331c
commit fa1d0e5995
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
CppCoreGuidelines.md
View File

@ -14139,10 +14139,16 @@ To prevent slicing.
// ...
}
Instead, use:
Instead, use a reference:
catch (exception& e) { /* ... */ }
of - typically better stil - a `const` reference:
catch (const exception& e) { /* ... */ }
Most handlers do not modify their exception and in general we [recommend use of `const`](#Res-const).
##### Enforcement
Flag by-value exceptions if their types are part of a hierarchy (could require whole-program analysis to be perfect).