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C++ map access discards qualifiers (const)
...wn compiler, so they may be able to get away with it. Even so, it's a bad idea.
the operator [] not only returns a reference, it actually creates the entry in the map. So you aren't just getting a mapping, if there is none, you are creating one. That's not what you intended.
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ContextLoaderListener or not?
...ity DelegatingFilterProxy and OpenEntityManagerInViewFilter). Is it a good idea to do it the other way around (Load every thing by ContextLoaderListener, and leave the DispatcherServlet without a configuration)?
– Ralph
Jan 30 '12 at 13:03
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Abstract functions in Swift Language
...n cycle. Maybe it's better to declare it as weak (which is commonly a good idea for delegates)
– Enricoza
Dec 4 '19 at 10:01
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How do you 'redo' changes after 'undo' with Emacs?
...s undo history
as what it is: a branching tree of
changes. This simple idea allows the
more intuitive behaviour of the
standard undo/redo system to be
combined with the power of never
losing any history. An added side
bonus is that undo history can in some
cases be stored more effici...
What does the “at” (@) symbol do in Python?
I'm looking at some Python code which used the @ symbol, but I have no idea what it does. I also do not know what to search for as searching Python docs or Google does not return relevant results when the @ symbol is included.
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How do I rename all files to lowercase?
...d ‘ppp.txt’ are the same file" and it doesnt lower case my file... any ideas? Is it because its in the same directory?
– lorless
Aug 8 '13 at 16:45
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What's wrong with foreign keys?
...enty of applications where you can get away with it, but it's not the best idea. You can't always count on your application to properly manage your database, and frankly managing the database should not be of very much concern to your application.
If you are using a relational database then it s...
How can I pipe stderr, and not stdout?
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Works very well for output to the screen. Do you have any idea why the ungrepped content appears again if I redirect the grep output into a file? After command 2> >(grep 'something' > grep.log) grep.log contains the same the same output as ungrepped.log from command 2> u...
Is there an alternative to bastard injection? (AKA poor man's injection via default constructor)
...tely have to have a public ctor. If you're not in that boat, this is a bad idea. Can you make that clear in your answer or I'd feel it should be downvoted on the basis that it doesnt add anything the other answer doesnt already do and is a significantly worse implementation given that it doesnt remo...
UTF-8 all the way through
..., when the function is actually designed to work on characters, PHP has no idea that your text has multi-byte characters that are found with Unicode.
A good library to check into is phputf8. This rewrites all of the "bad" functions so you can safely work on UTF8 strings. There are extensions like t...