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When is assembly faster than C?
...Editor's note: more likely the FP latency bottleneck is enough to hide the extra cost of loop. Doing two Kahan summations in parallel for the odd/even elements, and adding those at the end, could maybe speed this up by a factor of 2.)
Whoops, I was running a slightly different version of the code ...
How do I pass an object from one activity to another on Android? [duplicate]
...stead of simply putting the Parcelable object directly via Intent.putExtra(String name,Parcelable value) and then retrieving via Intent.getParcelableExtra(String name)?
– Tony Chan
Aug 2 '13 at 22:57
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Simplest way to read json from a URL in java
...;
import org.json.JSONObject;
public class JsonReader {
private static String readAll(Reader rd) throws IOException {
StringBuilder sb = new StringBuilder();
int cp;
while ((cp = rd.read()) != -1) {
sb.append((char) cp);
}
return sb.toString();
}
public static JSON...
Finding # occurrences of a character in a string in Ruby
....9...) that can help me find the number of occurrences of a character in a string. I'm looking for all occurrences, not just the first one.
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How does this milw0rm heap spraying exploit work?
...code. unscape will be used to put the sequence of bytes represented of the string in the spray variable. It's valid x86 code that fills a large chunk of the heap and jumps to the start of shellcode. The reason for the ending condition is string length limitations of the scripting engine. You can't h...
How to use the toString method in Java?
Can anybody explain to me the concept of the toString() method, defined in the Object class? How is it used, and what is its purpose?
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How can I read SMS messages from the device programmatically in Android?
...tent://sms/inbox") to read SMS which are in inbox.
// public static final String INBOX = "content://sms/inbox";
// public static final String SENT = "content://sms/sent";
// public static final String DRAFT = "content://sms/draft";
Cursor cursor = getContentResolver().query(Uri.parse("content://sms...
Extract hostname name from string
...uld like to match just the root of a URL and not the whole URL from a text string. Given:
27 Answers
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How to Calculate Execution Time of a Code Snippet in C++
...without Boost (tested on macOS/iOS):
#include <chrono>
#include <string>
#include <iostream>
#include <math.h>
#include <unistd.h>
class NLTimerScoped {
private:
const std::chrono::steady_clock::time_point start;
const std::string name;
public:
NLTimerSco...
Difference between size_t and unsigned int?
...int is not the only unsigned integer type. size_t could be any of unsigned char, unsigned short, unsigned int, unsigned long or unsigned long long, depending on the implementation.
Second question is that size_t and unsigned int are interchangeable or not and if not then why?
They aren't inter...