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Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...s; there are more complex editions (Enterprise Edition – EE) and simpler ones (Micro Edition – ME – for mobile environments).
The JDK includes the compiler and other tools needed to develop Java applications; JRE does not. So, to run a Java application someone else provides, you need JRE; to...
PostgreSQL - how to quickly drop a user with existing privileges
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Addition:
Apparently, trying to drop a user by using the commands mentioned here will only work if you are executing them while being connected to the same database that the original GRANTS were made from, as discussed here:
https://www.postgresql.org/message-id/83894A1821034948BA27FE4DAA474279...
Pull new updates from original GitHub repository into forked GitHub repository
I forked someone's repository on GitHub and would like to update my version with commits and updates made in the original repository. These were made after I forked my copy.
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String concatenation: concat() vs “+” operator
... two object allocations (the result String and its backing char[], neither one redundant), and any number of strings with three allocations (the String[], the result String, and the backing char[], with only the first being redundant). As it is, using StringBuilder will at best require four allocati...
A Regex that will never be matched by anything
... quite as elegant, but the more ideas you get the likelier you are to find one working across all RE engines of interest): r'a\bc', looking for a word-boundary immediately surrounded by letters on both sides (variant: nonword characters on both sides).
– Alex Martelli
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How can I reset or revert a file to a specific revision?
...stry-path will "draw a line" between two commits and -1 will show you just one version, and --reverse will ensure the first entry emitted is the oldest one.
– Chris Cogdon
Nov 19 '14 at 19:29
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C# Test if user has write access to a folder
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Funnily enough I had one of those other questions open in another tab but hadn't seen the answer about DirectorySecurity, teach me to read all the answers not just the accepted one;-)
– Chris B
Sep 11 '09 at...
Why does C# allow {} code blocks without a preceding statement?
... a fact which is observable in mixed-language projects if the first thing done with a variable in a loop is to pass it as an out parameter to an interface implementation written in another language, and that implementation reads the variable before writing it.
– supercat
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When to use an interface instead of an abstract class and vice versa?
... Duncan Malashock, not really. Jorge's answer is the better one. Alex's answer focuses on mechanics, while Jorge's more on semantics.
– Nazar Merza
Mar 18 '16 at 16:07
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“open/close” SqlConnection or keep open?
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Always close connections as soon as you are done with them, so they underlying database connection can go back into the pool and be available for other callers. Connection pooling is pretty well optimised, so there's no noticeable penalty for doing so. The advice is b...