sohailnajar

package gonumbers

func SplitNumber(n int) []int {
	slc := []int{}
	for n > 0 {
		slc = append(slc, n%10)
		n = n / 10
	}
	// reverse the slice
	for i, j := 0, len(slc)-1; i < j; i, j = i+1, j-1 {

sohailnajar

Profile JSON schema

Using jq is great for examining JSON objects. You can extend its functionality with custom methods. The following is useful to understand at a high level the structure of arbitrary JSONs which is useful when trying to understand new data sources.

Requires jq verison 1.5.

Profile an object

Add the following method to your ~/.jq:

sohailnajar

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

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Understanding the Memory Layout of Linux Executables

Required tools for playing around with memory:

• hexdump
• objdump
• readelf
• xxd
• gcore