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Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 46 |
1 files changed, 46 insertions, 0 deletions
@@ -71443,6 +71443,52 @@ the immediately enclosing form which surrounds the .code load-time form. +A +.code load-time +form may be nested inside another +.code load-time +form. In this situation, two cases occur. + +If the two forms are not embedded in a +.codn lambda , +or else are embedded in the same +.codn lambda , +then the inner +.code load-time +form is superfluous due to the presence of the outer +.codn load-time . +That is to say, the inner +.mono +.meti (load-time << form ) +.onom +expression is equivalent to +.metn form , +because the outer form already establishes its evaluation to be in a load-time +context. + +If the inner +.code load-time +form occurs in a +.codn lambda , +but the outer form occurs outside of that +.codn lambda , +then the semantics of the inner +.code load-time +form is relevant and necessary. This is because expressions occurring in a +.code lambda +are evaluated when the +.code lambda +is called, which may take place from a non-load-time context, even if the +.code lambda +itself was produced in a load-time context. + +An expression being embedded in a +.code lambda +means that it appears either in the +.code lambda +body, or else in the parameter list as the initializing +expression for an optional parameter. + .TP* Notes: When interpreted code containing |