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Can comments be used in JSON?
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No.
The JSON should all be data, and if you include a comment, then it will be data too.
You could have a designated data element called "_comment" (or something) that would be ignored by apps that use the JSON data.
You would probably be bett...
What is the difference between save and insert in Mongo DB?
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Save Vs Insert :
In your given examples, the behavior is essentially the same.
save behaves differently if it is passed with an "_id" parameter.
For save, If the document contains _id, it will upsert querying the collection on the _id field, If not, it will insert.
If a document does not...
Does a finally block run even if you throw a new Exception?
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Yes, the finally blocks always runs... except when:
The thread running the try-catch-finally block is killed or interrupted
You use System.exit(0);
The underlying VM is destroyed in some other way
The underlying hardware is unusable i...
What is the difference between git clone and checkout?
... operates on data that's already fetched. So it's not like svn checkout at all.
– August Lilleaas
May 26 '15 at 12:02
13
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Enabling markdown highlighting in Vim
... because Markdown treats lines ending with 2 or more space characters specially by inserting a <br>, so it is useful.
The plasticboy plugin uses TODO highlighting for this rule, which is a bit too much as it's designed to, by default, be really garish - yellow background - so that it stands o...
JRuby on Rails vs. Ruby on Rails, what's difference?
...hem from within Ruby code with JRuby. In the other direction you can also call JRuby code from within Java. JRuby can also use the JVM and application server capabilities.
JRuby is usually hosted within Java application servers such as Sun's GlassFish or even the Tomcat web server.
Although you cann...
Maven: Command to update repository after adding dependency to POM
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mvn install (or mvn package) will always work.
You can use mvn compile to download compile time dependencies or mvn test for compile time and test dependencies but I prefer something that always works.
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Default visibility for C# classes and members (fields, methods, etc.)?
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All of the information you are looking for can be found here and here (thanks Reed Copsey):
From the first link:
Classes and structs that are declared directly within a namespace (in other words, that are not nested with...
Does reading an entire file leave the file handle open?
...hat on the particular Python implementation.
To understand what this is all about, pay particular attention to the actual file object. In your code, that object is mentioned only once, in an expression, and becomes inaccessible immediately after the read() call returns.
This means that the file...
String.IsNullOrWhiteSpace in LINQ Expression
...INQ provider to deliver an optimized query. During this transformation not all C# statements are supported, as it either is not possible to translate them to a back-end specific query (e.g. SQL) or because the implementer did not foresee the need for the statement.
In contrast IEnumerable<T>...