The time you enjoy wasting is not wasted time.

– Bertrand Russell

16.1 Introduction

Labeling a library component as a "Utility" isn’t very informative. Obviously, every library component has been of utility to someone, somewhere, at some point in time. The facilities presented here are chosen because they serve critical purposes for many but their description doesn’t fit elsewhere. Often, they act as building blocks for more powerful library facilities, including ...

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