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Connect Java to a MySQL database
How do you connect to a MySQL database in Java?
14 Answers
14
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How can I increment a char?
...ertain loops, it's very useful to me to be able to do increment chars, and index arrays by chars.
6 Answers
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Heap vs Binary Search Tree (BST)
...ust start from the top
In a binary heap, increasing the value at a given index is also O(1) for the same reason. But if you want to do that, it is likely that you will want to keep an extra index up-to-date on heap operations How to implement O(logn) decrease-key operation for min-heap based Prior...
Are arrays passed by value or passed by reference in Java? [duplicate]
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Your question is based on a false premise.
Arrays are not a primitive type in Java, but they are not objects either ... "
In fact, all arrays in Java are objects1. Every Java array type has java.lang.Object as its supertype...
“PKIX path building failed” and “unable to find valid certification path to requested target”
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I had to put the path in quotes and also save it as Base64 instead of DER
– Theodore K.
Nov 2 '16 at 13:53
4
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find -exec cmd {} + vs | xargs
...his can be a security vulnerability as if there is a filename like "foo -o index.html" then -o will be treated as an option. Try in empty directory: "touch -- foo\ -o\ index.html; find . | xargs cat". You'll get: "cat: invalid option -- 'o'"
– Tometzky
May 28 '...
How to get first character of a string in SQL?
...ver may be able to optimise LEFT better than SUBSTRING when it is using an index.
– thomasrutter
Apr 27 '09 at 5:26
20
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Is explicitly closing files important?
...hat would happen if a file stays open?" part in this answer (askubuntu.com/questions/701491/…)
– RayLuo
Aug 22 '16 at 16:58
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How to shorten my conditional statements
...ave encountered it in other's code.
Instead of checking if the result of indexOf is >= 0, there is a nice little shortcut:
if ( ~[1, 2, 3, 4].indexOf(test.type) ) {
// Do something
}
Here is the fiddle: http://jsfiddle.net/HYJvK/
How does this work? If an item is found in the array, ind...
What are JavaScript's builtin strings?
this question is difficult to summarize in a question title
7 Answers
7
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