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Historical portrait of Grace Hopper

1906 – 1992United States

Grace Hopper

A compiler is a function machine: words in, actions out.

A short story

An American mathematician and computer scientist who built one of the world's first compilers: a programme that reads a rule written in human words and turns it into the actions a computer can carry out. Her compiler made it possible to write programmes about what you want done, not about which switches to flip. Every function in every programme you'll ever use traces back through Hopper's work.

In their own words

It is much easier to apologise than it is to get permission. But it is much, much easier to test a rule than to argue about it.

Paraphrased: from Grace Hopper's lectures on programming, 1980s.

The lab their idea turned into

Mill Lab

Drop a number in. Watch what comes out.

Open Mill Lab