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What is an EJB, and what does it do?
Been trying to learn what EJB beans are, what does it mean their instances are managed in a pool, blah blah. Really can't get a good grip of them.
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Determine whether JSON is a JSONObject or JSONArray
I am going to receive either a JSON Object or Array from server, but I have no idea which it will be. I need to work with the JSON, but to do so, I need to know if it is an Object or an Array.
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Extract a dplyr tbl column as a vector
Is there a more succinct way to get one column of a dplyr tbl as a vector, from a tbl with database back-end (i.e. the data frame/table can't be subset directly)?
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How to convert list of key-value tuples into dictionary?
I have a list that looks like:
7 Answers
7
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What do we mean by Byte array? [closed]
Could someone please explain, I do not exactly get the concept.
3 Answers
3
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Why can't I use the 'await' operator within the body of a lock statement?
The await keyword in C# (.NET Async CTP) is not allowed from within a lock statement.
8 Answers
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What are the best Haskell libraries to operationalize a program? [closed]
If I'm going to put a program into production, there are several things I need that program to do in order to consider it "operationalized" – that is, running and maintainable in a measurable and verifiable way by both engineers and operations staff. For my purposes, an operationalized program mus...
Should you ever use protected member variables?
Should you ever use protected member variables? What are the the advantages and what issues can this cause?
10 Answers
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Scanner vs. StringTokenizer vs. String.Split
I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...
C state-machine design [closed]
I am crafting a small project in mixed C and C++. I am building one small-ish state-machine at the heart of one of my worker thread.
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