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What's the difference between comma separated joins and join on syntax in MySQL? [duplicate]
...h in this case, with no join condition in the ON or WHERE clause, we could include the optional CROSS keyword as an aid to the future reader. To help the reader comprehend that the absence of a join condition was intentional. i.e. FROM table1 CROSS JOIN table2. I think this form communicates our in...
Do python projects need a MANIFEST.in, and what should be in it?
...as at python-distribute.org, but that registration has lapsed) tells me to include doc/txt files and .py files are excluded in MANIFEST.in file
...
CSS3 Transparency + Gradient
... the most recent examples, giving the css a selector class of 'grad',(I've included backwards compatibility)
.grad {
background-color: #F07575; /* fallback color if gradients are not supported */
background-image: -webkit-linear-gradient(top left, red, rgba(255,0,0,0));/* For Chrome 25 and...
Should all Python classes extend object?
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Latest jQuery version on Google's CDN
...de which didn't exist before. No responsible developer would automatically include new code from another site without testing it thoroughly.
There's simply no good reason to ALWAYS be using the latest version of jQuery. The old versions are still available on the CDNs, and if they work for your pur...
How do I programmatically “restart” an Android app?
...sion of @Oleg Koshkin answer.
If you really want to restart your activity including a kill of the current process, try following code. Place it in a HelperClass or where you need it.
public static void doRestart(Context c) {
try {
//check if the context is given
if ...
Generate random numbers uniformly over an entire range
...erable other random number generators with different kind of distributions including Bernoulli, Poisson and normal.
How can I shuffle a container?
The standard provides std::shuffle, which can be used as follows:
std::vector<int> vec = {4, 8, 15, 16, 23, 42};
std::random_device random_dev;
st...
Floating point vs integer calculations on modern hardware
...ow are sequentially dependent.)
Poor man's FPU/ALU operation benchmark:
#include <stdio.h>
#ifdef _WIN32
#include <sys/timeb.h>
#else
#include <sys/time.h>
#endif
#include <time.h>
#include <cstdlib>
double
mygettime(void) {
# ifdef _WIN32
struct _timeb tb;
_ftim...
Thread pooling in C++11
...t-vit/ctpl.
Then the code your wrote can be replaced with the following
#include <ctpl.h> // or <ctpl_stl.h> if ou do not have Boost library
int main (int argc, char *argv[]) {
ctpl::thread_pool p(2 /* two threads in the pool */);
int arr[4] = {0};
std::vector<std::fut...
Filter dict to contain only certain keys?
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