[slf4j-dev] [JIRA] Updates for SLF4J-371: Support the lambda expression in the Logger

[QOS.CH (JIRA)]

SLF4J / SLF4J-371 [Resolved]
Support the lambda expression in the Logger

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Here's what changed in this issue in the last few minutes.

There is 1 comment.

View or comment on issue using this link
https://jira.qos.ch/browse/SLF4J-371

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 1 comment
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Ondrej Zizka on 10/Nov/22 6:48 PM
Hi, I'm late to the heated debate.

I want to improve performance and relieve the app of the computation of the params to log calls, while keeping the code minimal. I.e. I prefer not to introduce fluent.

1) Does SLF4J support such simplest lambdas (this is a Kotlin syntax):
{code:java}
log.debug { "Foo ${bar.expensiveCall()}" }
{code}
Just so, no format, no additinal calls to fluent wrappers. Note: Kotlin can pass a lambda as both Callable or Supplier params.

2) If yes: Is it natively? Since 2.x? 
3) I'm on 1.7.36.  1.7.x is not getting that in any way? 2.x would require migration which I did not figure out on the first try.
4) If not: Is there a plan for that?  And is there a 3rd party project allowing that?

Thanks!


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