CreateDefaultContext will create a default context which will be cancelled if the program is terminated The terminal state will be automatically restored if it was altered in any way.

RandHexString generates a random hexadecimal string.

SeedMathRand initializes the random generator.

StringSliceContains tells whether a contains x.

Done is a lazily created channel which can be used to signal clients when an action is done It's similar to context.Context's Done function.

WaitGroup is a slightly different version of sync.WaitGroup with error handling and Wait() returns with a channel instead of blocking.