Finding the Implementation of Built-in Functions
It can be frustrating when you cannot find the implementation code for built-in functions, such as append() in Go. Unlike user-defined functions, built-in functions are not defined in source code files that you can access. Here's how you can find the implementation:
The implementation of append() and other built-in functions is embedded directly in the Go compiler, gc. To view the code for append(), you can inspect the source code of the compiler itself:
Locate the Go compiler source code:
Find the relevant file:
Inspect the code:
Additionally, the growslice() function, which is used by append(), is located in the runtime/slice.go file:
Locate the Go runtime source code:
Find the relevant file:
By inspecting the source code of the compiler and runtime, you can gain insights into the implementation details of built-in functions.
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