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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...
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: /(?<!...
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...
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 ...
Java 8: Lambda-Streams, Filter by Method with Exception
...would be thrown, and at that place it isn't declared.
You can deal with it by using a wrapper of your lambda that translates checked exceptions to unchecked ones:
public static <T> T uncheckCall(Callable<T> callable) {
try {
return callable.call();
} catch (RuntimeExcepti...
Commit only part of a file in Git
...
After pressing e, You can edit the hunk manually by replacing + or - by #
– veksen
Nov 24 '15 at 20:31
1
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An established connection was aborted by the software in your host machine
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This problem can be simply solved by closing Eclipse and restarting it. Eclipse sometimes fails to establish a connection with the Emulator, so this can happen in some cases.
share
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Pointers vs. values in parameters and return values
... have to change, and otherwise pass values, because getting things changed by surprise via a pointer is confusing.
One case where you should often use a pointer:
Receivers are pointers more often than other arguments. It's not unusual for methods to modify the thing they're called on, or for n...