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TIOA-TIOA FTW
(source)
A piggy bank of commands, fixes, succinct reviews, some mini articles and technical opinions from a (mostly) Perl developer.
How to apply a stash by name in git
1) In git it's easy to retrieve stashes by number like this:
git stash apply stash@{5}
But that number changes as you add more stashes to the list.
2) Instead you could perform some jiggery-pokery in bash to look up the stash by name:
git stash apply $(git stash list | grep "$NAME" | cut -d: -f1)
You can apply multiple stashes as long as they don't overlap.
3) Or you could save the commit and refer to it by tag:
git commit -m'The usual changes to aid debugging'
git tag foo
git reset --hard HEAD^
git cherry-pick -n foo
(-n is --no-commit)
This way if they overlap you can use git's merging/conflict mechanism.
(source)
git stash apply stash@{5}
But that number changes as you add more stashes to the list.
2) Instead you could perform some jiggery-pokery in bash to look up the stash by name:
git stash apply $(git stash list | grep "$NAME" | cut -d: -f1)
You can apply multiple stashes as long as they don't overlap.
3) Or you could save the commit and refer to it by tag:
git commit -m'The usual changes to aid debugging'
git tag foo
git reset --hard HEAD^
git cherry-pick -n foo
(-n is --no-commit)
This way if they overlap you can use git's merging/conflict mechanism.
Adventures in Scala 1.0
Mac OSX:
brew install sbt@1
Try the "Hello, World" example from scala-lang.org:
Run it:
Well, it worked. But that's a helluva lot of warnings for very little code!
A colleague informs me how to set up another Hello World that's known to work:
sbt new https://github.com/scala/scala-seed.g8
(enter name: hello)
cd hello
sbt run
...but I still get the warnings, although the code does output "hello" as expected.
It seems I've just joined Scala at a time when 1.0 has recently been released, and lots of existing code does not exactly make the compiler happy yet.
Note: The warning was not displayed the second time I ran the program. Somehow it remembers.
To do:
brew install sbt@1
Try the "Hello, World" example from scala-lang.org:
object HelloWorld {
def main(args: Array[String]): Unit = {
println("Hello, world!")
}
}
Run it:
Go [15:46: learning-scala$] sbt run [warn] No sbt.version set in project/build.properties, base directory:~alt/learning-scala [info] Set current project to learning-scala (in build file:~/alt/learning-scala/) [info] Compiling 1 Scala source to ~/alt/learning-scala/target/scala-2.12/classes ...
[info] Non-compiled module 'compiler-bridge_2.12' for Scala 2.12.4. Compiling... [info] Compilation completed in 11.024s. [info] Done compiling. WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.google.protobuf.UnsafeUtil (file:~/.sbt/boot/scala-2.12.4/org.scala-sbt/sbt/1.1.0/protobuf-java-3.3.1.jar) to field java.nio.Buffer.address WARNING: Please consider reporting this to the maintainers of com.google.protobuf.UnsafeUtil WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [info] Packaging ~/alt/learning-scala/target/scala-2.12/learning-scala_2.12-0.1.0-SNAPSHOT.jar ... [info] Done packaging. [info] Running HelloWorld Hello, world! [success] Total time: 16 s, completed 9 Feb 2018, 15:47:03
Well, it worked. But that's a helluva lot of warnings for very little code!
A colleague informs me how to set up another Hello World that's known to work:
sbt new https://github.com/scala/scala-seed.g8
(enter name: hello)
cd hello
sbt run
...but I still get the warnings, although the code does output "hello" as expected.
WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.google.protobuf.UnsafeUtil (file:~/.sbt/boot/scala-2.12.4/org.scala-sbt/sbt/1.1.0/protobuf-java-3.3.1.jar) to field java.nio.Buffer.address WARNING: Please consider reporting this to the maintainers of com.google.protobuf.UnsafeUtil
It seems I've just joined Scala at a time when 1.0 has recently been released, and lots of existing code does not exactly make the compiler happy yet.
Note: The warning was not displayed the second time I ran the program. Somehow it remembers.
To do:
- Find out how to avoid the warning.
- Find out how to repeat the warning!
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