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When should null values of Boolean be used?
...ime you can. This will avoid many NullPointerExceptions and make your code more robust.
Boolean is useful, for example
to store booleans in a collection (List, Map, etc.)
to represent a nullable boolean (coming from a nullable boolean column in a database, for example). The null value might mean ...
How can I get a user's media from Instagram without authenticating as a user?
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@MattFletcher it's even more stupid now, one must go through app permission review, and not sure if it's even feasible since this use case "showing client's own feed in their own webpage" is not one of the use cases. Duh, these restrictions suck.
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Scanner vs. StringTokenizer vs. String.Split
...a particular token, they won't help you with that.
StringTokenizer is even more restrictive than String.split(), and also a bit fiddlier to use. It is essentially designed for pulling out tokens delimited by fixed substrings. Because of this restriction, it's about twice as fast as String.split(). (...
Returning 'IList' vs 'ICollection' vs 'Collection'
...ype. If the result is only going to be iterated, the consumer doesn't need more than that.
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Ways to save enums in database
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We never store enumerations as numerical ordinal values anymore; it makes debugging and support way too difficult. We store the actual enumeration value converted to string:
public enum Suit { Spade, Heart, Diamond, Club }
Suit theSuit = Suit.Heart;
szQuery = "INSERT INTO Customer...
How to auto-reload files in Node.js?
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SQL: How to properly check if a record exists
...eneraly we use it (the verify) when want do something, then your answer is more complete.
– Abner Escócio
Nov 7 '18 at 18:43
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How to set downloading file name in ASP.NET Web API
...ystem.Net.Mime.ContentDisposition or ContentDispositionHeaderValue? Is one more current and more preferred than the other?
– Luminous
May 8 '15 at 16:00
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Is there a simple way to delete a list element by value?
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I do not imagine why it should be more or less than O(n). I think that it uses an ordinary search algorithm. No additional information about any sorting of the list!
– LRDPRDX
Jul 10 '17 at 17:30
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Find first element in a sequence that matches a predicate
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@geekazoid: seq.find(&method(:predicate)) or even more concise for instance methods e.g.: [1,1,4].find(&:even?)
– jfs
Jul 20 '15 at 5:07
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