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Should switch statements always contain a default clause?
...l switch statements. I recently remembered this advice but can't remember what the justification was. It sounds fairly odd to me now.
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AngularJS: How can I pass variables between controllers?
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What is the point in declaring var _dataObj = {}; when you returning a direct reference to it..? That is not private. In the first example you can do this.dataObj = {}; and in the second return { dataObj: {} }; it's a u...
Python idiom to return first item or None
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That last option is almost exactly what I'm looking for: it's clear, it works, and it doesn't require me to define a new function. I'd say "exactly" if the break were somehow not needed, because the risk of omitting it is not insignificant. But this approac...
What's the difference between JPA and Hibernate? [closed]
...ibernate has more features than JPA 2. But from a practical point of view, what really is the difference?
22 Answers
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How can I implement prepend and append with regular JavaScript?
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Nice, just what I was looking for.
– Andrei Cristian Prodan
Feb 25 '14 at 15:23
2
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Android Facebook integration with invalid key hash
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This is what needs to be done for the Production environment!!! Thumbs up!
– Bikey
Dec 25 '17 at 0:05
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How to get the current working directory in Java?
...va.nio.file.Path and java.nio.file.Paths, you can do the following to show what Java thinks is your current path. This for 7 and on, and uses NIO.
Path currentRelativePath = Paths.get("");
String s = currentRelativePath.toAbsolutePath().toString();
System.out.println("Current relative path is: " + ...
Which is faster : if (bool) or if(int)?
...ble unit. bool's size is implementation-defined, and may be 1, 4, or 8, or whatever. Compilers tend to make it one, though.
– GManNickG
Apr 23 '11 at 20:20
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Behaviour of increment and decrement operators in Python
...anslates to
count
You have to use the slightly longer += operator to do what you want to do:
count += 1
I suspect the ++ and -- operators were left out for consistency and simplicity. I don't know the exact argument Guido van Rossum gave for the decision, but I can imagine a few arguments:
S...
Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...enied'.
First I ran sudo service mongodb stop.
Then I used ls -la to see what group & owner mongodb assigned to /var/lib/mongodb (existing path) and I changed the /data/db (new path) with chown and chgrp to match. (example: sudo chown -R mongodb:mongodb /data/db)
Then I updated the path in etc...