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| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version

## compile-format-strings-switch

As with all compiler switch variables, the value of this variable can be `t`, `nil`, or a function object that accepts five arguments and returns `t` or `nil`. The arguments passed to the function will be the values of the safety, space, speed, debug, and compilation-speed optimization qualities, in that order. `nil` is equivalent to a function that always returns `nil` and `t` to a function that always returns `t`. When the value is a function and we say `t` (or true) or `nil` (or false) in the text below, we mean that the function returns, respectively, `t` or `nil`.

When true, a format string (the second required argument to format) is converted to a tree structure at compile time. If `nil`, the conversion is done at run time, resulting in slower printing but smaller code. Initially true when speed is greater than space.

See compiling.htm for information on the compiler.

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This page was not revised from the 8.2 page.
Created 2012.5.30.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version