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Getting JavaScript object key list
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Note that this is different from for(key in ob)! Object.keys wont list the keys from prototypes, but .. in obj does.
– Albert
Mar 24 '14 at 12:33
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What is a segmentation fault?
...hat “does not belong to you.” It’s a helper mechanism that keeps you from corrupting the memory and introducing hard-to-debug memory bugs. Whenever you get a segfault you know you are doing something wrong with memory – accessing variable that has already been freed, writing to a read-only p...
Best way to represent a fraction in Java?
...inator = denominator.divide(gcd);
}
/**
* Constructs a BigFraction from a whole number.
*/
public BigFraction(BigInteger numerator)
{
this(numerator, BigInteger.ONE, true);
}
public BigFraction(long numerator, long denominator)
{
this(BigInteger.valueOf(numerator), BigI...
How to format strings using printf() to get equal length in the output?
...t high. However, I trust the asker to be intelligent enough to extrapolate from my example :)
– Carl Smotricz
Nov 27 '09 at 16:03
3
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How do I get the name of a Ruby class?
How can I get the class name from an ActiveRecord object?
5 Answers
5
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How to initialize an array in Java?
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When you create an array of size 10 it allocated 10 slots but from 0 to 9.
This for loop might help you see that a little better.
public class Array {
int[] data = new int[10];
/** Creates a new instance of an int Array */
public Array() {
for(int i = 0; i < dat...
Flask-SQLAlchemy how to delete all rows in a single table
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Try delete:
models.User.query.delete()
From the docs: Returns the number of rows deleted, excluding any cascades.
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Is either GET or POST more secure than the other?
When comparing an HTTP GET to an HTTP POST, what are the differences from a security perspective? Is one of the choices inherently more secure than the other? If so, why?
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unix diff side-to-side results?
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From man diff, you can use -y to do side-by-side.
-y, --side-by-side
output in two columns
Hence, say:
diff -y /tmp/test1 /tmp/test2
Test
$ cat a $ cat b
hello hello
my name ...
How to lazy load images in ListView in Android
... images and captions associated with those images. I am getting the images from the Internet. Is there a way to lazy load images so while the text displays, the UI is not blocked and images are displayed as they are downloaded?
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