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Why does this code using random strings print “hello world”?
...e share your code. I would greatly appreciate it.
public static void main(String[] args) {
long time = System.currentTimeMillis();
generate("stack");
generate("over");
generate("flow");
generate("rulez");
System.out.println("Took " + (System.currentTimeMillis() - time) + " ...
Pick any kind of file via an Intent in Android
...y solution which works on Samsung and other devices:
public void openFile(String mimeType) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(mimeType);
intent.addCategory(Intent.CATEGORY_OPENABLE);
// special intent for Samsung file manager
...
Replace non-ASCII characters with a single space
...code will insert multiple blanks per character if you feed it a UTF-8 byte string.
– Mark Ransom
Nov 19 '13 at 19:13
...
What is move semantics?
...nderstand move semantics with example code. Let's start with a very simple string class which only holds a pointer to a heap-allocated block of memory:
#include <cstring>
#include <algorithm>
class string
{
char* data;
public:
string(const char* p)
{
size_t size =...
Copy a file in a sane, safe and efficient way
...; src.rdbuf();
}
This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class.
There is a C method for interacting with the file system:
#include ...
Test whether string is a valid integer
...aining it so I can learn a little? I gather it reads, "At the start of the string (^), a minus sign (-) is optional (?), followed by any number of characters between zero and 9, inclusive" ... and what then might the +$ mean? Thanks.
– Richard T
Feb 5 '10 at 21...
strdup() - what does it do in C?
...ed to the abbreviated way in which C and UNIX assigns words, it duplicates strings :-)
Keeping in mind it's actually not part of the ISO C standard itself(a) (it's a POSIX thing), it's effectively doing the same as the following code:
char *strdup(const char *src) {
char *dst = malloc(strlen (...
Count the number of occurrences of a string in a VARCHAR field?
...
The ROUND here is unnecessary. assume a string of length x with n occurrences of'value. LENGTH(description) - LENGTH( REPLACE ( description, "value", "") ) will always give you n*length("value"), diving that by length of value will always leave a whole number n. N...
How to Copy Text to Clip Board in Android?
...hod to copy text to clipboard:
private void setClipboard(Context context, String text) {
if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context.getSystemService(Context.CLIPBOARD_SE...
Code Golf - π day
...
In dc: 88 and 93 93 94 96 102 105 129 138 141 chars
Just in case, I am using OpenBSD and some supposedly non-portable extensions at this point.
93 chars. This is based on same formula as FORTRAN solution (slightly different results than test cases). Calculates X^2=R^2-...