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How to search in array of object in mongodb
...al Medal in 1975.
See MongoDB $elemMatch Documentation for more info. See Read Operations Documentation for more information about querying documents with arrays.
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java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger for JUnit test case for Java mail
I am using Java Mail API to read and parse emails. It is working fine with Servlet code.
7 Answers
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How do I create an average from a Ruby array?
... solutions here, that I know that look extremely neat, but I'm afraid if I read my code in the future they'll like gibberish. Thanks for the clean solution!
– atmosx
Sep 11 '14 at 11:16
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Possible reasons for timeout when trying to access EC2 instance
... it is only matter of time that something like that happens. (Recommended reading: Architecting for the Cloud: Best Practices (PDF), a paper by Jinesh Varia who is a web services evangelist at Amazon. See especially the section titled "Design for failure and nothing will fail".)
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Why do you need to put #!/bin/bash at the beginning of a script file?
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If I'm already in bash, does it start another bash instance if it sees #!/bin/bash? What if I'm already in bash and I leave it out? Is there any difference?
– node ninja
Jan 23 '12 at 7:29
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How to identify if a webpage is being loaded inside an iframe or directly into the browser window?
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Note attempting to read frameElement will throw a SecurityError exception in cross-origin iframes, according to W3C (WHATWG says it should return null instead). So you might want to wrap it inside a try...catch statement.
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How to convert JSON data into a Python object
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Hey, I was just reading up and I realized that dictionaries will totally do, only I was wondering how to convert JSON objects into dictionaries and how do I access this data from the dictionary?
– Sai Krishna
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Listing only directories using ls in Bash?
...-h/
./masters/ ./-n/ ./static/ ./-v var/
But the spaces in filenames make reading a bit confusing.
If instead of echo, we use ls, the shell is still what is expanding the list of filenames. The shell is the reason to get a list of directories in the PWD. The -d option to ls makes it list the prese...
Programmatically add custom event in the iPhone Calendar
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Thanks for posting this. Just a reminder to all who read this: take care to watch for memory leaks. There are a couple in this code sample. Also, best practices would dictate that you check the value of 'err' after saveEvent:span:error and handle things accordingly.
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Creating a blocking Queue in .NET?
I have a scenario where I have multiple threads adding to a queue and multiple threads reading from the same queue. If the queue reaches a specific size all threads that are filling the queue will be blocked on add until an item is removed from the queue.
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