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Why are iframes considered dangerous and a security risk?
Why are iframes considered dangerous and a security risk? Can someone describe an example of a case where it can be used maliciously?
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Providing a default value for an Optional in Swift?
The idiom for dealing with optionals in Swift seems excessively verbose, if all you want to do is provide a default value in the case where it's nil:
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Erlang's 99.9999999% (nine nines) reliability
Erlang was reported to have been used in production systems for over 20 years with an uptime percentage of 99.9999999%.
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What is the difference D3 datum vs. data?
Can someone please explain the difference between datum() and data() in D3.js? I see both being used and I am not sure why you should choose one over the other?
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How to accept Date params in a GET request to Spring MVC Controller?
I've a GET request that sends a date in YYYY-MM-DD format to a Spring Controller.
The controller code is as follows:
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Creating Multifield Indexes in Mongoose / MongoDB
I'm trying to find documentation, to no avail, on how to create multi-field indexes in Mongoosejs. In particular I have two fields that need to be indexed and unique. What is an example mongoose schema that indexes two fields together?
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Unable to modify ArrayAdapter in ListView: UnsupportedOperationException
I'm trying to make a list containing names. This list should be modifiable (add, delete, sort, etc). However, whenever I tried to change the items in the ArrayAdapter, the program crashed, with java.lang.UnsupportedOperationException error. Here is my code:
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Java - No enclosing instance of type Foo is accessible
I have the following code:
5 Answers
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Django self-referential foreign key
I'm kind of new to webapps and database stuff in general so this might be a dumb question. I want to make a model ("CategoryModel") with a field that points to the primary id of another instance of the model (its parent).
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Why doesn't the JVM cache JIT compiled code?
The canonical JVM implementation from Sun applies some pretty sophisticated optimization to bytecode to obtain near-native execution speeds after the code has been run a few times.
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