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What is the --save option for npm install?
...pdate npm 5:
As of npm 5.0.0, installed modules are added as a dependency by default, so the --save option is no longer needed. The other save options still exist and are listed in the documentation for npm install.
Original answer:
Before version 5, NPM simply installed a package under node_modu...
Polymorphism in C++
...o its job, with the exact type being irrelevant. The "concepts" introduced by C++20 express and enforce such expectations - see cppreference page here.
Parametric polymorphism provides duck typing - a concept attributed to James Whitcomb Riley who apparently said "When I see a bird that walks like...
Installation error: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED?
...ibute with package, so when you create activity you put "." to be preceded by package name, you can also type the full name of the activity like : "com.example.test.Activity_Name", or ".Activity_Name"
– Amt87
Sep 18 '12 at 7:40
...
Detect network connection type on Android
...ugh to meet your demands you have to handle all the network types returned by getSubType().
It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it useful.
Here is a Gist of the class, so you can fork it and ...
Python concatenate text files
... script to concatenate these files into a new file. I could open each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, especially the part where I have to read//write line by line.
...
How do I set the value property in AngularJS' ng-options?
...abel for value in array
select as label for value in array
label group by group for value in array
select as label group by group for value in array track by trackexpr
For object data sources:
label for (key , value) in object
select as label for (key , value) in object
label group by ...
How to return result of a SELECT inside a function in PostgreSQL?
...RE t.chartype = 'ALPHABETIC'
LIMIT _max_tokens
) t
GROUP BY t.txt
ORDER BY cnt DESC; -- potential ambiguity
END
$func$ LANGUAGE plpgsql;
Call:
SELECT * FROM word_frequency(123);
Explanation:
It is much more practical to explicitly define the return t...
What is a Maven artifact?
...
In general software terms, an "artifact" is something produced by the software development process, whether it be software related documentation or an executable file.
In Maven terminology, the artifact is the resulting output of the maven build, generally a jar or war or other executab...
Using ECMAScript 6
... true. For instance, look-behinds in regular expression are still disabled by default. The following will return false if the --enable-javascript-harmony flag is set: /(?<!a)b/.test('ab') (and throw the next error if the flag is not set: "Uncaught SyntaxError: Invalid regular expression: /(?<!...
Getting an element from a Set
... be all about. In my case, I'd like to get some complex object from a set by key (String). This String is encapsulated (and unique) to the object being mapped. In fact, the whole object 'revolves' around said key. Furthermore, the caller knows said String, but not the object itself; that's exactly ...