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How to listen for changes to a MongoDB collection?
...of background job queue system with MongoDB as the data store. How can I "listen" for inserts to a MongoDB collection before spawning workers to process the job? Do I need to poll every few seconds to see if there are any changes from last time, or is there a way my script can wait for inserts to oc...
Determine if an element has a CSS class with jQuery
I'm working with jQuery and looking to see if there is an easy way to determine if the element has a specific CSS class associated with it.
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Java regex email
First of all, I know that using regex for email is not recommended but I gotta test this out.
20 Answers
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boundingRectWithSize for NSAttributedString returning wrong size
...o get the rect for an attributed string, but the boundingRectWithSize call is not respecting the size I pass in and is returning a rect with a single line height as opposed to a large height (it is a long string). I have experimented by passing in a very large value for the height and also 0 as in t...
Converting JSON String to Dictionary Not List
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Your JSON is an array with a single object inside, so when you read it in you get a list with a dictionary inside. You can access your dictionary by accessing item 0 in the list, as shown below:
json1_data = json.loads(json1_str)[0]
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How to add a TextView to LinearLayout in Android
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edited Feb 22 '14 at 21:37
Lucas
3,08255 gold badg...
Meaning of = delete after function declaration
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Deleting a function is a C++11 feature:
The common idiom of "prohibiting copying" can now be expressed
directly:
class X {
// ...
X& operator=(const X&) = delete; // Disallow copying
X(const X&) = delete;
};
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How to start working with GTest and CMake
... for my code. I have decided to use the Google Test utility to help with this, but require some help in getting started.
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When do you use map vs flatMap in RxJava?
...ne event to another.
flatMap transform one event to zero or more event. (this is taken from IntroToRx)
As you want to transform your json to an object, using map should be enough.
Dealing with the FileNotFoundException is another problem (using map or flatmap wouldn't solve this issue).
To solve ...
Calling closure assigned to object property directly
...irectly without reassigning the closure to a variable and then calling it. Is this possible?
12 Answers
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