| ArrayList.trimToSize |
chops off the unused RAM on ArrayList’s
internal array by allocating a new array just the right size and copying the
elements over, then discarding the old internal array to be garbage collected. |
| Collection.toArray |
Exports an array just the right size. Always provide it with a template
array the right size and type e.g.
|
| String.trim |
removes both leading and trailing whitespace (not just blanks, nul,
\n, \t…all the
chars in the range 0..0x20) and gives you a new substring
of the orginal. trim is neatly implmented. If there
is nothing to trim, it just gives you your original String
back. If there is something to trim, it gives you a substring
view of your original immutable String. It does not
need to allocate a new internal char[] or copy over
the meat characters. In other words trim is a fast
operation. |
| StringTools.condense |
collapses multiple spaces to a single space and trims off both leading and
trailing spaces (not whitespace). |
| StringTools.countLeading |
count how many of a leading character there are, e.g. how many spaces or '*'s. |
| StringTools.countTrailing |
counts how many of a trailing character there are, e.g. how many spaces or '*'s. |
| StringTools.squish |
removes all spaces (not whitespace), included embedded ones. |
| StringTools.trimLeading |
removes just leading whitespace. |
| StringTools.trimTrailing |
removes just trailing whitespace. |
by Roedy Green ©1996-2008 Canadian Mind Products
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