The simplest examples I have on hand are instances of Path and URI which can be built with an empty string. I want to know if these are "empty". For the app I am now on for example, a Path or null and "" should be treated the same. Same for a URI.
Gary On Fri, Jan 27, 2017 at 5:37 PM, Matt Sicker <boa...@gmail.com> wrote: > That's an interesting use case, though I've never come across a toString() > implementation that would be affected. Can you go into more detail? > > On 27 January 2017 at 16:04, Gary Gregory <garydgreg...@gmail.com> wrote: > > > _Like_ that except that our Log4j version does not do the case I want: > > object.toString(). > > > > Gary > > > > On Fri, Jan 27, 2017 at 1:58 PM, Matt Sicker <boa...@gmail.com> wrote: > > > > > Something like this? > > > > > > https://github.com/apache/logging-log4j2/blob/master/ > > > log4j-core/src/main/java/org/apache/logging/log4j/core/ > > > util/Assert.java#L43 > > > > > > On 27 January 2017 at 15:54, Gary Gregory <garydgreg...@gmail.com> > > wrote: > > > > > > > Hi All, > > > > > > > > There are certain kinds of objects, _descriptor_ kind of objects that > > > would > > > > benefit from isEmpty semantics. These kind of objects can describe > > > complex > > > > command line arguments and other kind of configuration objects. > > > > > > > > I'd like to add with this pseudo code: > > > > > > > > boolean isEmpty(Object) { > > > > return object == null ? true : isEmpty(object.toString()); > > > > } > > > > > > > > Thoughts? > > > > > > > > Same idea of isBlank(), isNotEmpty() and so on. > > > > > > > > Gary > > > > > > > > -- > > > > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > > > > Java Persistence with Hibernate, Second Edition > > > > <https://www.amazon.com/gp/product/1617290459/ref=as_li_ > > > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1617290459& > > > > linkCode=as2&tag=garygregory-20&linkId= > cadb800f39946ec62ea2b1af9fe6a2 > > b8> > > > > > > > > <http:////ir-na.amazon-adsystem.com/e/ir?t= > garygregory-20&l=am2&o=1&a= > > > > 1617290459> > > > > JUnit in Action, Second Edition > > > > <https://www.amazon.com/gp/product/1935182021/ref=as_li_ > > > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182021& > > > > linkCode=as2&tag=garygregory-20&linkId= > 31ecd1f6b6d1eaf8886ac902a24de4 > > > 18%22 > > > > > > > > > > > > > <http:////ir-na.amazon-adsystem.com/e/ir?t= > garygregory-20&l=am2&o=1&a= > > > > 1935182021> > > > > Spring Batch in Action > > > > <https://www.amazon.com/gp/product/1935182951/ref=as_li_ > > > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182951& > > > > linkCode=%7B%7BlinkCode%7D%7D&tag=garygregory-20&linkId=%7B% > > > > 7Blink_id%7D%7D%22%3ESpring+Batch+in+Action> > > > > <http:////ir-na.amazon-adsystem.com/e/ir?t= > garygregory-20&l=am2&o=1&a= > > > > 1935182951> > > > > Blog: http://garygregory.wordpress.com > > > > Home: http://garygregory.com/ > > > > Tweet! http://twitter.com/GaryGregory > > > > > > > > > > > > > > > > -- > > > Matt Sicker <boa...@gmail.com> > > > > > > > > > > > -- > > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > > Java Persistence with Hibernate, Second Edition > > <https://www.amazon.com/gp/product/1617290459/ref=as_li_ > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1617290459& > > linkCode=as2&tag=garygregory-20&linkId=cadb800f39946ec62ea2b1af9fe6a2b8> > > > > <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a= > > 1617290459> > > JUnit in Action, Second Edition > > <https://www.amazon.com/gp/product/1935182021/ref=as_li_ > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182021& > > linkCode=as2&tag=garygregory-20&linkId=31ecd1f6b6d1eaf8886ac902a24de4 > 18%22 > > > > > > > <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a= > > 1935182021> > > Spring Batch in Action > > <https://www.amazon.com/gp/product/1935182951/ref=as_li_ > > tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182951& > > linkCode=%7B%7BlinkCode%7D%7D&tag=garygregory-20&linkId=%7B% > > 7Blink_id%7D%7D%22%3ESpring+Batch+in+Action> > > <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a= > > 1935182951> > > Blog: http://garygregory.wordpress.com > > Home: http://garygregory.com/ > > Tweet! http://twitter.com/GaryGregory > > > > > > -- > Matt Sicker <boa...@gmail.com> > -- E-Mail: garydgreg...@gmail.com | ggreg...@apache.org Java Persistence with Hibernate, Second Edition <https://www.amazon.com/gp/product/1617290459/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1617290459&linkCode=as2&tag=garygregory-20&linkId=cadb800f39946ec62ea2b1af9fe6a2b8> <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1617290459> JUnit in Action, Second Edition <https://www.amazon.com/gp/product/1935182021/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182021&linkCode=as2&tag=garygregory-20&linkId=31ecd1f6b6d1eaf8886ac902a24de418%22> <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1935182021> Spring Batch in Action <https://www.amazon.com/gp/product/1935182951/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1935182951&linkCode=%7B%7BlinkCode%7D%7D&tag=garygregory-20&linkId=%7B%7Blink_id%7D%7D%22%3ESpring+Batch+in+Action> <http:////ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=1935182951> Blog: http://garygregory.wordpress.com Home: http://garygregory.com/ Tweet! http://twitter.com/GaryGregory
