Hi,
Groovy supports a literal syntax for creating a StringBuilder/StringBuffer instead of the usual
def sb = new StringBuilder()
However, I can't seem to remember (or find on Google) the correct syntax.
Thanks, Don
+2
A:
To create a StringBuilder
text = 'Hello '
To append
text <<= 'World!'
omerkudat
2009-11-25 15:04:43
It seems that that text is converted from a String to a StringBuilder only when the '<<=' operator is used, correct?Also, it's actually a StringBuffer not a StringBuilder
Don
2009-11-25 15:20:38
Yes, in fact my example might be overly simplistic. You do need to convert and reassign to StringBuffer, as such the `<<=` operator. Later you can just use `<<`. Also you are right about the `StringBuffer`, which is how they allowed in-place character replacement using the `[]` operator.
omerkudat
2009-11-25 15:30:24
+2
A:
To get a StringBuffer in a single step, you could use
def sb = 'Hello'<<''
or even:
def sb = ''<<'' //4 single quotes, not double quotes
for an initially empty one.
I think (but I could be wrong) the reason for using a StringBuffer rather than a StringBuilder is to maintain compatibility with Java 1.4.
matt
2009-11-25 16:14:01