Pretty Slice Printer

It pretty prints any type of slices to any io.Writer with adjustable coloring features.

Example

package main

import s "github.com/inancgumus/prettyslice"

func main() {
	nums := []int{1, 3, 5, 2, 4, 8}
	odds := nums[:3]
	evens := nums[3:]

	nums[1], nums[3] = 9, 6
	s.Show("nums", nums)
	s.Show("odds : nums[:3]", odds)
	s.Show("evens: nums[3:]", evens)
}

Output:

Example #2 — Render Colorless

package main

import s "github.com/inancgumus/prettyslice"

func main() {
	// Render colorless output to a file
	f, _ := os.Create("out.txt")
	defer f.Close()

	nums := []int{1, 3, 5, 2, 4, 8}

	s.Writer = f
	s.Colors(false)
	s.Show("nums", nums)
}

Printing Options

• Writer: Control where to draw the output. Default: colors.Output (It's like os.Stdout but with colors).
• PrintBacking: Whether to print the backing array. Default: false.
• PrettyByteRune: Prints the bytes and runes as characters instead of numbers. Default: true.
• MaxPerLine: Maximum number of slice items on a line. Default: 5.
• MaxElements: Limits the number of elements printed. 0 means printing all elements. Default: 0.
• Width: Number of space characters (padding) between the header message and the slice details like len, cap and ptr. Default: 45.
• NormalizePointers: Prints the addresses of the slice elements as if they're contiguous. It basically normalizes by the element type size. See the source code for more information. Default: false.
• PrintHex: Prints the pointers as hexadecimals. Default: false.
• PrintBytesHex: Prints byte elements as hex digits. Overrides the PrettyByteRune option for byte values. Default: false.
• PrintElementAddr: Prints the element addresses. Default: false.

Coloring Options

• ColorHeader: Sets the color for the header. Default: color.New(color.BgHiBlack, color.FgMagenta, color.Bold).
• ColorSlice: Sets the color for the slice elements. Default: color.New(color.FgCyan).
• ColorBacker: Sets the color for the backing array elements. Default: color.New(color.FgHiBlack).
• ColorIndex: Sets the color for the index numbers. Default: ColorBacker.
• ColorAddr: Sets the color for the element addresses. Default: ColorBacker.

Have fun!