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What is the difference between Collection and List in Java?

What is the difference between Collection and List in Java? When should I use which? 7 Answers ...
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Converting a Java Keystore into PEM Format

I am trying to convert from a Java keystore file into a PEM file using keytool and openssl applicactions. But I could not find a good way to do the conversion. Any ideas? ...
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Can HTML be embedded inside PHP “if” statement?

...uld like to embed HTML inside a PHP if statement, if it's even possible, because I'm thinking the HTML would appear before the PHP if statement is executed. ...
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How does collections.defaultdict work?

I've read the examples in python docs, but still can't figure out what this method means. Can somebody help? Here are two examples from the python docs ...
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python list by value not by reference [duplicate]

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How to change max_allowed_packet size

...L database - when uploading files larger than approx 1MB I get an error Packets larger than max_allowed_packet are not allowed. ...
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Web Service vs WCF Service

What is the difference between them? 6 Answers 6 ...
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How to do 3 table JOIN in UPDATE query?

I asked a question and got this reply which helped. 6 Answers 6 ...
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How can I use map and receive an index as well in Scala?

Is there any List/Sequence built-in that behaves like map and provides the element's index as well? 8 Answers ...
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How do I find a “gap” in running counter with SQL?

I'd like to find the first "gap" in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3. ...