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Convert a byte array to integer in Java and vice versa
...;> 16),
(byte)(value >> 8),
(byte)value };
}
int fromByteArray(byte[] bytes) {
return ByteBuffer.wrap(bytes).getInt();
}
// packing an array of 4 bytes to an int, big endian, minimal parentheses
// operator precedence: <<, &, |
// when operators of equal pre...
How do I get the application exit code from a Windows command line?
...
If you're running directly from a Windows command line and always seeing 0 returned, see Gary's answer: stackoverflow.com/a/11476681/31629
– Ken
Aug 30 '12 at 13:51
...
How to get Enum Value from index in Java?
...to get the enum at indexposition. As mentioned above arrays begin to count from 0, if you want your index to start from '1' simply change these two methods to:
public static String getCountry(int i) {
return list[(i - 1)];
}
public static int listGetLastIndex() {
return list.length;
}
In...
How to delete duplicate lines in a file without sorting it in Unix?
...d, or use a wildcard… the 'seen' array will fill up with duplicate lines from ALL the files. If you instead want to treat each file independently, you'll need to do something like for f in *.txt; do gawk -i inplace '!seen[$0]++' "$f"; done
– Nick K9
Jan 17 '1...
How is “=default” different from “{}” for default constructor and destructor?
...e constructors/assignment, destructors etc) means something very different from simply doing {}. With the latter, the function becomes "user-provided". And that changes everything.
This is a trivial class by C++11's definition:
struct Trivial
{
int foo;
};
If you attempt to default construct o...
Tar archiving that takes input from a list of files
...ut comments in mylist.txt .. is there any workaround using some tar option from inside mylist.txt ?
– Stphane
Aug 10 '18 at 10:50
8
...
How to calculate an angle from three points? [closed]
...P132 - P232) / (2 *
P12 * P13))
where P12 is the length of the segment from P1 to P2, calculated by
sqrt((P1x -
P2x)2 +
(P1y -
P2y)2)
share
edited Aug 25 '16 at...
Remove last character from C++ string
How can I remove last character from a C++ string?
10 Answers
10
...
How to add leading zeros?
...ne is best depends upon what other formatting you want to do.
The example from the question is quite easy since all the values have the same number of digits to begin with, so let's try a harder example of making powers of 10 width 8 too.
anim <- 25499:25504
x <- 10 ^ (0:5)
paste (and it...
Using awk to print all columns from the nth to the last
...
You can also use "-b" to specify the position (from the Nth character onwards).
– Dakatine
Sep 10 '13 at 13:56
...