Request Short Link
C++ 98
C++ 11
C++ 14
C++ 17
C++ 20
C++ 23
C++ 2c
for-loops as while-loops
array subscription
Show all implicit casts
Show all template parameters of a CallExpr
Use libc++
Transform std::initializer_list
Show noexcept internals
Show padding information
Show coroutine transformation
Show C++ to C transformation
Show object lifetime
Default
15
18
20
22
26
More
GitHub
Patreon
Issues
About
Policies
Examples
C++ Insights @ YouTube
Settings
Version
Special: C++ Self-study w. Coaching
×
Made by
Andreas Fertig
Powered by
Flask
and
CodeMirror
Source:
#include <memory> // the openssl API struct BIGNUM; BIGNUM* BN_new() noexcept; void BN_free(BIGNUM*); using unique_BIGNUM = std::unique_ptr<BIGNUM, decltype([](BIGNUM* bn){ BN_free(bn);})>; inline unique_BIGNUM make_BIGNUM(){ return unique_BIGNUM(BN_new()); #pragma GCC poison BN_new } void foo(){ // better, no need to specify anything auto a = make_BIGNUM(); }
Insight:
Console: