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How do I clear the std::queue efficiently?
...).
In one scenario, I want to clear the queue in one shot( delete all jobs from the queue).
I don't see any clear method available in std::queue class.
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How to “return an object” in C++?
...), and find what you can do to fix it. It likely won't be returning things from functions.
That said, if you're dead set on writing like that, you'd probably want to do the out parameter. It avoids dynamic memory allocation, which is safer and generally faster. It does require you have some way t...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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The best solution is to extract properties from object and make them flat dot-notation key-value pairs. You could use for example this library:
https://www.npmjs.com/package/mongo-dot-notation
It has .flatten function that allows you to change object into flat set ...
How to count number of files in each directory?
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Its just a slighly different version from the above, so: ( hint: its sorted by name and its in csv) for x in find . -maxdepth 1 -type d | sort; do y=find $x | wc -l; echo $x,$y; done
– pcarvalho
May 11 '13 at 17:25
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Use URI builder in Android or create URL with variables
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Excellent answer from above turned into a simple utility method.
private Uri buildURI(String url, Map<String, String> params) {
// build url with parameters.
Uri.Builder builder = Uri.parse(url).buildUpon();
for (Map.Entry...
Using Mockito to test abstract classes
... test an abstract class. Sure, I can manually write a mock that inherits from the class.
11 Answers
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How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?
... be hiding data.
If you want to eliminate any microseconds or nanoseconds from your data, truncate.
Instant instant2 = instant.truncatedTo( ChronoUnit.MILLIS ) ;
The java.time classes use ISO 8601 format by default when parsing/generating strings. A Z at the end is short for Zulu, and means UTC....
Most efficient way to cast List to List
... at some far distant, hard-to-associate point in code when a value is read from the collection. If you heed compiler warnings about type safety, you will avoid these type errors at runtime.
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Convert java.util.Date to String
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// Print the result!
System.out.println("Today is: " + todayAsString);
From http://www.kodejava.org/examples/86.html
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Maximum size of a element
...ange errors with Firefox 16.0.2.
First, I seem to get different behavior from in memory (created in javascript) canvas as opposed to html declared canvas.
Second, if you don't have the proper html tag and meta charset, the canvas might be restricted to 8196, otherwise you can go up to 32767.
T...