go-data-structures

The difference between new and make is that new allocates zero-valued memory returning a pointer, while make initializes built-in Go data structures like slices, maps, and channels with proper internal allocation and non-nil values.

To avoid slice aliasing and capacity bugs in Go, you must understand slice lifetime and copying behavior. Using explicit copy operations prevents unintended memory sharing when appending or modifying underlying arrays.

The best way to initialize Go maps and slices is using composite literals. This approach explicitly defines zero values and initial key-value pairs or elements, ensuring clear semantics when building memory-efficient data containers.

You use iota in Go programs to generate incrementing constants. It simplifies defining enumerated values by resetting to zero in each const block, reducing bugs related to manual integer assignment.

Go fmt printing shows zero values because newly allocated structures default to empty states. Understanding how printing and formatting render these defaults clarifies allocation primitive behavior and struct initialization semantics.