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Closure in Java 7 [closed]
...d for inclusion in Java 7, but in the end were not included. -ed) Can anyone please provide me with some reliable references from where I can learn stuff about closures?
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Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...also need to know which versions of PHP support this lazy copy concept. Anyone has more info?
– Mario Awad
Feb 15 '13 at 12:00
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Purge Kafka Topic
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Temporarily update the retention time on the topic to one second:
kafka-topics.sh --zookeeper <zkhost>:2181 --alter --topic <topic name> --config retention.ms=1000
And in newer Kafka releases, you can also do it with kafka-configs --entity-type topics
kafka-confi...
How can I recover a removed file in Mercurial (if at all)?
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from eclipse this can be done by right clicking the file Select Team-->Revert
– Emil
Oct 10 '13 at 6:43
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Is iterating ConcurrentHashMap values thread safe?
...ncurrent" in ConcurrentHashMap means). However, there is no guarantee that one thread will see the changes to the map that the other thread performs (without obtaining a new iterator from the map). The iterator is guaranteed to reflect the state of the map at the time of it's creation. Futher change...
How can I move a tag on a git branch to a different commit?
...nction with -a to force-create an annotated tag instead of a non-annotated one.
Example
Delete the tag on any remote before you push
git push origin :refs/tags/<tagname>
Replace the tag to reference the most recent commit
git tag -fa <tagname>
Push the tag to the remote origin
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Is there any use for unique_ptr with array?
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There is no reason in the world why someone wouldn't be able to use std::vector if they can use std::unique_ptr.
– Miles Rout
Apr 29 '14 at 14:48
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Word wrap for a label in Windows Forms
How can one get word wrap functionality for a Label for text which goes out of bounds?
17 Answers
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How to inspect Javascript Objects
...nspector, if you're interested, I'm happy to share.
Edit 2: Well, I wrote one up anyway.
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How to process each line received as a result of grep command
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One of the easy ways is not to store the output in a variable, but directly iterate over it with a while/read loop.
Something like:
grep xyz abc.txt | while read -r line ; do
echo "Processing $line"
# your code goes...