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Does C have a “foreach” loop construct?
... GNU C99.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#define FOREACH_COMP(INDEX, ARRAY, ARRAY_TYPE, SIZE) \
__extension__ \
({ \
bool ret = 0; \
if (__builtin_types_compatible_p (const char*, ARRAY_TYPE)) \
ret = INDEX ...
What is AF_INET, and why do I need it?
... in Python socket module) addresses are represented as follows:
A single string is used for the AF_UNIX/AF_LOCAL address family. This option is used for IPC on local machines where no IP address is required.
A pair (host, port) is used for the AF_INET address family, where host is a string represe...
Generate a Hash from string in Javascript
I need to convert strings to some form of hash. Is this possible in JavaScript?
22 Answers
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How do I iterate over the words of a string?
I'm trying to iterate over the words of a string.
79 Answers
79
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Why declare a struct that only contains an array in C?
...
You can use struct to make a new type of data like string. you can define :
struct String {
char Char[MAX];
};
or you can create a List of data that you can use it by argument of functions or return it in your methods. The struct is more flexible than an array, because...
Regex doesn't work in String.matches()
...matcher:
Pattern p = Pattern.compile("[a-z]");
Matcher m = p.matcher(inputstring);
if (m.find())
// match
If what you want is indeed to see if an input only has lowercase letters, you can use .matches(), but you need to match one or more characters: append a + to your character class, as in [...
Get original URL referer with PHP?
...
try this
(isset ($_SERVER['HTTP_CLIENT_IP']) ?
$_SERVER['HTTP_CLIENT_IP'] :
(isset ($_SERVER['HTTP_X_FORWARDED_FOR']) ?
$_SERVER['HTTP_X_FORWARDED_FOR'] :
$_SERVER['REMOTE_ADDR']
)
)
...
How do I create a URL shortener?
...
I would continue your "convert number to string" approach. However, you will realize that your proposed algorithm fails if your ID is a prime and greater than 52.
Theoretical background
You need a Bijective Function f. This is necessary so that you can find a inve...
Should I initialize variable within constructor or outside constructor [duplicate]
...fference .But in some case initializing in constructor makes sense.
class String
{
char[] arr/*=char [20]*/; //Here initializing char[] over here will not make sense.
String()
{
this.arr=new char[0];
}
String(char[] arr)
{
this.arr=arr;
}
}
So depending...
What's the opposite of chr() in Ruby?
...
If String#ord didn't exist in 1.9, it does in 2.0:
"A".ord #=> 65
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