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Should I use a class or dictionary?
...at is mostly because that's what we like to enumerate together. i actually do think that the widespread use of classes to keep data is an abuse of oop; when you tghink about serialization issues, you can easily see why.
– flow
Feb 19 '11 at 19:39
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How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
22 Answers
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Batch equivalent of Bash backticks
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You can do it by redirecting the output to a file first. For example:
echo zz > bla.txt
set /p VV=<bla.txt
echo %VV%
share
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What is the JavaScript version of sleep()?
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Great stuff here. I wonder, how does this affects or relates with the modern browsers "active" / "inactive" states after JS calls the "sleep" mode? Can the browser block the sleep as expected for general JS, to recall later when becomes "active", or does i...
How do I create a variable number of variables?
How do I accomplish variable variables in Python?
14 Answers
14
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Interfaces with static fields in java for sharing 'constants'
... example is the SwingConstants interface in Swing, which is implemented by dozens of classes that all "re-export" all of its constants (even the ones that they don't use) as their own.
But don't just take my word for it, Josh Bloch also says it's bad:
The constant interface pattern is a poor us...
What is the difference between a reference type and value type in c#?
...eap object or a variable/field (struct). In practice, while structs which do not expose their fields can implement any kind of semantics, the fact that .net allows promiscuous sharing of heap references means heap objects cannot implement mutable value semantics.
– supercat
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Delete specified file from document directory
I want to delete an image from my app document directory. Code I have written to delete image is:
10 Answers
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How do I get textual contents from BLOB in Oracle SQL
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Unfortunately, I do not control the database schema - I just need to peek into the blob... But thanks anyway.
– Roland Tepp
May 7 '09 at 6:32
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Why do we usually use || over |? What is the difference?
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| does not do short-circuit evaluation in boolean expressions. || will stop evaluating if the first operand is true, but | won't.
In addition, | can be used to perform the bitwise-OR operation on byte/short/int/long values. ||...