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Can a variable number of arguments be passed to a function?
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In C, how should I read a text file and print all strings
...the last byte of the file
fseek(handler, 0, SEEK_END);
// Offset from the first to the last byte, or in other words, filesize
string_size = ftell(handler);
// go back to the start of the file
rewind(handler);
// Allocate a string that can hold it all
...
How does this program work?
...
That's because %d expects an int but you've provided a float.
Use %e/%f/%g to print the float.
On why 0 is printed: The floating point number is converted to double before sending to printf. The number 1234.5 in double representation in little endian is
00 00 00 00 00 4A 93...
Calculate size of Object in Java [duplicate]
...;
public class Measurer {
public static void main(String[] args) {
Set<Integer> hashset = new HashSet<Integer>();
Random random = new Random();
int n = 10000;
for (int i = 1; i <= n; i++) {
hashset.add(random.nextInt());
}
System.out.println(ObjectGra...
What's the difference between HEAD^ and HEAD~ in Git?
When I specify an ancestor commit object in Git, I'm confused between HEAD^ and HEAD~ .
15 Answers
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Linux command: How to 'find' only text files?
After a few searches from Google, what I come up with is:
16 Answers
16
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How can I get the behavior of GNU's readlink -f on a Mac?
On Linux, the readlink utility accepts an option -f that follows additional links. This doesn't seem to work on Mac and possibly BSD based systems. What would the equivalent be?
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How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
14...
Pure JavaScript Send POST Data Without a Form
...ody:
var xhr = new XMLHttpRequest();
xhr.open("POST", yourUrl, true);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify({
value: value
}));
By the way, for get request:
var xhr = new XMLHttpRequest();
// we defined the xhr
xhr.onreadystatechange = function ()...
How to output only captured groups with sed?
...wing insertion of a newline in the pattern space, one suggestion is:
> set string = "This is a sample 123 text and some 987 numbers"
>
> set pattern = "[0-9][0-9]*"
> echo $string | sed "s/$pattern/\n&\n/g" | sed -n "/$pattern/p"
123
987
> set pattern = "[a-z][a-z]*"
> echo $s...