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How to use ConcurrentLinkedQueue?
...<YourObject> queue = new ConcurrentLinkedQueue<YourObject>();
Now, wherever you are creating your producer/consumer objects, pass in the queue so they have somewhere to put their objects (you could use a setter for this, instead, but I prefer to do this kind of thing in a constructor):
...
Difference between abstraction and encapsulation?
...is that it doesn't care about the data it sorts — in fact, it doesn’t know what data it sorts. Rather, its input type is a typeless pointer (void*) which is just C’s way of saying “I don't care about the type of data” (this is also called type erasure). The important point is that the impl...
When should one use HTML entities?
...er to read and edit for those who understand what the character means and know how to type it.
UTF-8 encodings are just as unintelligible as HTML entity encodings for those who don't understand them, but they have the advantage of rendering as special characters rather than hard to understand decima...
Should I implement __ne__ in terms of __eq__ in Python?
...e other side, not self == other is (assuming the operand's __eq__ doesn't know how to compare the other operand) implicitly delegating to __eq__ from the other side, then inverting it. For weird types, e.g. the SQLAlchemy ORM's fields, this causes problems.
– ShadowRanger
...
How does `scp` differ from `rsync`?
...able on a Unix-like system, so you prevent an annoying "command not found" now and then.
– Rafa
May 6 '14 at 21:58
3
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What is the good python3 equivalent for auto tuple unpacking in lambda?
...s, key=lambda p: (lambda x,y: (x*x + y*y))(*p))
update Python 3.8
As of now, Python 3.8 alpha1 is available, and PEP 572- assignment expressions are implemented.
So, if one uses a trick to execute multiple expressions inside a lambda - I usually do that by creating a tuple and just returning the...
Add shadow to custom shape on Android
...
Old question, but Elevation, available with Material Design now provides a shadow to any views.
<TextView
android:id="@+id/myview"
...
android:elevation="2dp"
android:background="@drawable/myrect" />
See the docs at https://developer.android.com/training/material/shadows-clip...
Sample settings.xml for maven
...you have an integration testing plugin - like cactus -
| that needs to know where your Tomcat instance is installed, you can
| provide a variable here such that the variable is dereferenced during the
| build process to configure the cactus plugin.
|
| As noted above, profiles can be ...
How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
...following content:
:gemdir:
- ~/.gem/ruby
install: -n /usr/local/bin
Now you can run your command normally without the -n flag.
Enjoy!
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How to select from subquery using Laravel Query Builder?
...misspelt the name, it should have been selectSub. I've updated my response now.
– Sasa Blagojevic
Sep 26 '18 at 7:39
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