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Java: int array initializes with nonzero elements
According to the JLS, an int array should be filled by zeros just after initialization. However, I am faced with a situation where it is not. Such a behavior occurs first in JDK 7u4 and also occurs in all later updates (I use 64-bit implementation). The following code throws exception:
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Math.random() versus Random.nextInt(int)
What is the difference between Math.random() * n and Random.nextInt(n) where n is an integer?
4 Answers
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Default constructor vs. inline field initialization
...d the same initial value (like in your example, an array of given size, or integer of specific value), but it can work in your favour or against you:
If you have many constructors that initialise variables differently (i.e. with different values), then initialisers are useless because the changes w...
Is there a way to loop through a table variable in TSQL without using a cursor?
...possible to loop using just SELECT statements as shown below:
Declare @Id int
While (Select Count(*) From ATable Where Processed = 0) > 0
Begin
Select Top 1 @Id = Id From ATable Where Processed = 0
--Do some processing here
Update ATable Set Processed = 1 Where Id = @Id
End
An...
The default for KeyValuePair
...fault value '0' to avoid build error:
// Use of unassigned local variable 'intValue'
int intValue = 0;
long longValue = 12;
KeyValuePair<String, int> kvp1 = new KeyValuePair<String, int>("string", 11);
KeyValuePair<String, int> kvp2 = new KeyValuePair<String, int>();
List<...
Different between parseInt() and valueOf() in java?
How is parseInt() different from valueOf() ?
11 Answers
11
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How to do scanf for single char in C [duplicate]
...what if you need to read more inputs? Consider:
#include <stdio.h>
int main(void)
{
char ch1, ch2;
scanf("%c", &ch1); /* Leaves the newline in the input */
scanf(" %c", &ch2); /* The leading whitespace ensures it's the
previous newline is ignored ...
How to print the contents of RDD?
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You can convert your RDD to a DataFrame then show() it.
// For implicit conversion from RDD to DataFrame
import spark.implicits._
fruits = sc.parallelize([("apple", 1), ("banana", 2), ("orange", 17)])
// convert to DF then show it...
What is the printf format specifier for bool?
...NSI C99 there is _Bool or bool via stdbool.h . But is there also a printf format specifier for bool?
8 Answers
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How do arrays in C# partially implement IList?
So as you may know, arrays in C# implement IList<T> , among other interfaces. Somehow though, they do this without publicly implementing the Count property of IList<T> ! Arrays have only a Length property.
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