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Why is @autoreleasepool still needed with ARC?

...ile time. This is, just by reading the code, even before it is run! :) In order to do so there is only one condition: We MUST follow the rules, otherwise the compiler would not be able to automate the process at compile time. So, to ensure that we never break the rules, we are not allowed to explic...
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What is the difference between SAX and DOM?

...and "event-based" refers to the parsing method. Maybe a small recap is in order: The document object model (DOM) is an abstract data model that describes a hierarchical, tree-based document structure; a document tree consists of nodes, namely element, attribute and text nodes (and some others). N...
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What is the difference between client-side and server-side programming?

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. ...
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JAX-RS — How to return JSON and HTTP status code together?

... In that case, we use the created method of the Response builder class in order to set the status code to 201. We pass the entity object (user) to the response via the entity() method. The result is that the HTTP code is 401 as we wanted, and the body of the response is the exact same JSON as we h...
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Surrogate vs. natural/business keys [closed]

...The primary key is used as a clustered index which determines the physical order of your data. In general, Integer is easy to balance since it increments sequentially and your data will append to the EOF on disk. If you use less sequential data such as text or GUID(UUID), there will be a lot more di...
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SQL injection that gets around mysql_real_escape_string()

...t necessarily know the character that will be used to quote the literal in order to avoid munging one's data. The Payload " OR 1=1 -- The payload initiates this injection quite literally with the " character. No particular encoding. No special characters. No weird bytes. mysql_real_escape_str...
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How to check version of python modules?

... I think this can help but first install show package in order to run pip show then use show to find the version! sudo pip install show # in order to get package version execute the below command sudo pip show YOUR_PACKAGE_NAME | grep Version ...
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Generate pdf from HTML in div using Javascript

... jsPDF is able to use plugins. In order to enable it to print HTML, you have to include certain plugins and therefore have to do the following: Go to https://github.com/MrRio/jsPDF and download the latest Version. Include the following Scripts in your proje...
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MongoDB vs. Cassandra [closed]

...s of data size. It's feature set is minimalistic, little beyond that of an ordered key value store. MongoDB is a heavily featured (and fast) document store at the cost of durability and guarantees about writes persisting (since they're not immediately written to disk). They're different beasts with ...
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Protecting Java Source Code From Being Accessed [closed]

...; unusual characters; trusted timestamping; modus operandi. Here's them in order. Whitespace watermarking: This is my original contribution to watermarking. I needed an invisible watermark that worked in text files. The trick I came up with was to put in a specific pattern of whitespace between prog...