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Why can a function modify some arguments as perceived by the caller, but not others?
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Some answers contain the word "copy" in a context of a function call. I find it confusing.
Python doesn't copy objects you pass during a function call ever.
Function parameters are names. When you call a function Python binds these parameters to whatever objects you pass (via names in a ...
psycopg2: insert multiple rows with one query
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My inserts didn't get registered properly until I called connection.commit() after the execute_values(...).
– Philipp
Aug 18 at 15:24
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CSS: How to position two elements on top of each other, without specifying a height?
...exactly on top of each other. However, when I do that, the formatting gets all screwed up because the containing DIV acts like there is no height. I think this is the expected behavior with position:absolute but I need to find a way to position these two elements on top of each other and have the ...
Plurality in user messages
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If there is ever any chance, no matter how small, that this app will need to be translated to other languages then both are wrong. The correct way of doing this is:
string message = ( noofitemsselected==1 ?
"You have selected " + noofitemsselected + " item. Are you s...
What ports does RabbitMQ use?
What ports does RabbitMQ Server use or need to have open on the firewall for a cluster of nodes?
4 Answers
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In Node.js, how do I “include” functions from my other files?
Let's say I have a file called app.js. Pretty simple:
26 Answers
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If strings are immutable in .NET, then why does Substring take O(n) time?
...t tiny substrings from tiny strings, so how the complexity grows asymptotically is completely irrelevant.
The long answer is:
An immutable data structure built such that operations on an instance permit re-use of the memory of the original with only a small amount (typically O(1) or O(lg n)) of co...
How to remove application from app listings on Android Developer Console
...et you cannot delete it. (Each package name is unique and Google remembers all package names anyway so you could use this a reminder)
The "Delete" button only works for unpublished version of your app. Once you published your app or a particular version of it, you cannot delete it from the Market. H...
Where are static methods and static variables stored in Java?
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Static methods (in fact all methods) as well as static variables are stored in the PermGen section of the heap, since they are part of the reflection data (class related data, not instance related).
Update for clarification:
Note that only the va...
Difference between no-cache and must-revalidate
...ably preferred by the user (better to have something stale than nothing at all). This is why must-revalidate is intended for critical transactions only.
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