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Function dmd.expression.StringExp.compare
Compare two StringExp
by length, then value
The comparison is not the usual C-style comparison as seen with
strcmp
or memcmp
, but instead first compare based on the length.
This allows both faster lookup and sorting when comparing sparse data.
This ordering scheme is relied on by the string-switching feature.
Code in Druntime's core
relies on this ordering
when doing a binary search among case statements.
Both StringExp
should be of the same encoding.
Parameters
Name | Description |
---|---|
se2 | String expression to compare this to |
Returns
0
when this
is equal to se2, a value greater than 0
if
this
should be considered greater than se2
,
and a value less than 0
if this
is lesser than se2
.
Authors
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.