Author Archives: Mark

About Mark

I'm a programmer, sharing everything I know. I love writing about intermediate & advanced technical topics. Is there anything you'd like to read about? Please let me know on Twitter @offlinemark 😊.

Getting bit by unique_ptr

I got bit by unique_ptr when implementing a linked list today. You need to be careful to manually release() the unique_ptr before resetting or you might accidentally free the entire list. This comes up when doing insertions and stuff like that.

People hate surveys, but like being interviewed

(Originally appeared on my Indie Hackers blog)

Instead of posting a link to a survey in a Facebook group with potential customers, post that you’re doing a research project and would love to interview some people that do [whatever your target market does].

Here’s my theory: People don’t like filling out surveys because it feels cold, and impersonal. On the other hand, answering questions being asked by a human interviewer, even if they are the same questions, makes them feel important because of the personal touch. Someone else is taking time from their day to ask the questions, so it’s more reciprocal.

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Being pedantic about C++ compilation

Takeaways:

  • Don’t assume it’s safe to use pre-built dependencies when compiling C++ programs. You might want to build from source, especially if you can’t determine how a pre-built object was compiled, or if you want to use a different C++ standard than was used to compile it.
  • Ubuntu has public build logs which can help you determine if you can use a pre-built object, or if you should compile from source.
  • pkg-config is useful for generating the flags needed to compile a complex third-party dependency. CMake’s PkgConfig module can make it easy to integrate a dep into your build system.
  • Use CMake IMPORTED targets (e.g. BZip2::Bzip2) versus legacy variables (e.g. BZIP2_INCLUDE_DIRS and BZIP2_LIBRARIES).
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