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Practical uses for AtomicInteger
...() as a type of optimistic locking - get the current value, compute result based on this, set this result iff value is still the input used to do the calculation, else start again - but the counting examples are very useful, and I'll often use AtomicIntegers for counting and VM-wide unique generator...
Find the extension of a filename in Ruby
...orks for multi-period suffixes, except an heuristic (thus error prone) database of extensions.
– Ciro Santilli 郝海东冠状病六四事件法轮功
Oct 24 '14 at 14:10
4
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Difference of Maven JAXB plugins
...
the jaxb2-maven-plugin (https://github.com/mojohaus/jaxb2-maven-plugin)
Based on the comments of this thread, I've always used the maven-jaxb2-plugin (i.e. plugin #1):
Concerning the
org.jvnet.jaxb2.maven2:maven-jaxb2-plugin
versus
com.sun.tools.xjc.maven2:maven-jaxb-plugin,
from my p...
When to use a View instead of a Table?
...underlying schema
Views can model complex joins easily.
Views can hide database-specific stuff from you. E.g. if you need to do some checks using Oracles SYS_CONTEXT function or many other things
You can easily manage your GRANTS directly on views, rather than the actual tables. It's easier to manag...
install / uninstall APKs programmatically (PackageManager vs Intents)
... that either user has pressed ok or cancel so that i can take the decision based on this
– Erum
Nov 25 '14 at 7:41
2
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What is the difference between t.belongs_to and t.references in rails?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to mock an import
...on is down. I had below error:
ImproperlyConfigured: Requested setting BASE_DIR, but settings are not
configured. You must either define the environment variable
DJANGO_SETTINGS_MODULE or call settings.configure() before accessing
settings.
Ran 1 test in 0.078s
FAILED (errors=...
How to create and write to a txt file using VBA
I have a file which is manually added or modified based on the inputs. Since most of the contents are repetitive in that file, only the hex values are changing, I want to make it a tool generated file.
...
What is the Ruby (spaceship) operator?
..., it provides the most general purpose way to sort ascending or descending based on multiple columns/attributes.
For example, if I have an array of objects I can do things like this:
# `sort!` modifies array in place, avoids duplicating if it's large...
# Sort by zip code, ascending
my_objects.s...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...jects.self"];
As AnthoPak also noted it is possible to remove duplicates based on a property. An example would be: @distinctUnionOfObjects.name
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