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Why are regular expressions so controversial? [closed]
When exploring regular expressions (otherwise known as RegEx-es), there are many individuals who seem to see regular expressions as the Holy Grail. Something that looks so complicated - just must be the answer to any question. They tend to think that every problem is solvable using regular express...
Creating Multifield Indexes in Mongoose / MongoDB
...ou call the index method on your Schema object to do that as shown here. For your case it would be something like:
mySchema.index({field1: 1, field2: 1}, {unique: true});
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Good examples of MVVM Template
I am currently working with the Microsoft MVVM template and find the lack of detailed examples frustrating. The included ContactBook example shows very little Command handling and the only other example I've found is from an MSDN Magazine article where the concepts are similar but uses a slightly d...
Knight's Shortest Path on Chessboard
I've been practicing for an upcoming programming competition and I have stumbled across a question that I am just completely bewildered at. However, I feel as though it's a concept I should learn now rather than cross my fingers that it never comes up.
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Android Quick Actions UI Pattern
I'm interested in incorporating the Android UI pattern called "Quick Action". Basically, it's a context menu that doesn't cover up the data that is being acted on. I'd like to implement this but I cannot find some sample code or an API to help me out.
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What does the property “Nonatomic” mean?
...e Apple Docs.
Basically, if you say nonatomic, and you generate the accessors using @synthesize, then if multiple threads try to change/read the property at once, badness can happen. You can get partially-written values or over-released/retained objects, which can easily lead to crashes. (This is p...
Breaking a list into multiple columns in Latex
...ve a relatively long list where each list item contains very little text. For example:
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Does R have an assert statement as in python?
a statement that checks if something is true and if not prints a given error message and exits
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How can I limit Parallel.ForEach?
I have a Parallel.ForEach() async loop with which I download some webpages. My bandwidth is limited so I can download only x pages per time but Parallel.ForEach executes whole list of desired webpages.
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Why escape_javascript before rendering a partial?
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Yeah, actually it's more of a formatting method. It doesn't prevent users from executing their own javascript. Nothing can prevent that.
– LasagnaAndroid
Feb 23 '15 at 1:31
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