180. Static Memory

Question.8

A developer defines a static member in the header:

Pre-C++17 (two files needed):

// config.h
class Config { public: static int timeout; };
// config.cpp
int Config::timeout = 1000;  // Must define separately

C++17:

// config.h only
class Config {
public:
   inline static int timeout = 1000; // Definition in header!
};

What does inline static change?

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Makes the variable faster
Allows defining the static member directly in the header -- no separate .cpp definition needed; the linker deduplicates across translation units
Makes the variable thread-safe
Moves the variable to the stack

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