trace - multiple declarations

Template trace

Debugging aid: Output current file/line to stderr.

Also flushes stderr to ensure buffering and a subsequent crash don't cause the message to get lost.


template trace();

Function name	Description
trace

// Output example:
// src/myproj/myfile.d(42): trace
trace();

Debugging aid: Output variable name/value and file/line info to stderr.

Also flushes stderr to ensure buffering and a subsequent crash don't cause the message to get lost.


template trace(alias var);

Function name	Description
trace

auto x = 5;
auto str = "Hello";

// Output example:
// src/myproj/myfile.d(42): x: 5
// src/myproj/myfile.d(43): str: Hello
trace!x;
trace!str;