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What is the EAFP principle in Python?
...e assumes the existence of valid keys or attributes and catches exceptions if the assumption proves false. This clean and fast style is characterized by the presence of many try and except statements. The technique contrasts with the LBYL style common to many other languages such as C.
An example ...
How can I read SMS messages from the device programmatically in Android?
...solver().query(Uri.parse("content://sms/inbox"), null, null, null, null);
if (cursor.moveToFirst()) { // must check the result to prevent exception
do {
String msgData = "";
for(int idx=0;idx<cursor.getColumnCount();idx++)
{
msgData += " " + cursor.getColumnNa...
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
...
I think the least intrusive way of doing this is as follows:
Check if the user-agent is that of an iPhone/iPod Touch
Check for an appInstalled cookie
If the cookie exists and is set to true, set window.location to your-uri:// (or do the redirect server side)
If the cookie doesn't exist, open...
Geometric Mean: is there a built-in?
...in mind they are the same, but of course this is not generally true. Thus, if you want to include optional propagation of zeros, and treat the length(x) differently in the case of NA removal, the following is a slightly longer alternative to the function above.
gm_mean = function(x, na.rm=TRUE, zer...
How to make ThreadPoolExecutor's submit() method block if it is saturated?
... of code indeed comes from Java Concurrency in Practice, and it is correct if you take its context into account. The book clearly states, literally: "In such an approach, use an unbounded queue (...) and set the bound on the semaphore to be equal to the pool size plus the number of queued tasks you ...
How do I execute a command and get the output of the command within C++ using POSIX?
..._ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
if (!pipe) {
throw std::runtime_error("popen() failed!");
}
while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
result += buffer.data();
}
return result;
}
Pre-C++11 version:...
$(window).width() not the same as media query
...
If you don't have to support IE9 you can just use window.matchMedia() (MDN documentation).
function checkPosition() {
if (window.matchMedia('(max-width: 767px)').matches) {
//...
} else {
//...
}
...
How to determine an object's class?
If class B and class C extend class A and I have an object of type B or C , how can I determine of which type it is an instance?
...
Angularjs Template Default Value if Binding Null / Undefined (With Filter)
...
This doesn't work if you need to display a '0' value in column
– neel shah
Jun 23 '14 at 11:30
6
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Laravel redirect back to original destination after login
...irect the user to "/login"
// and stores the url being accessed on session
if (Auth::guest()) {
return redirect()->guest('login');
}
return $next($request);
On login action:
// redirect the user back to the intended page
// or defaultpage if there isn't one
if (Auth::attempt(['email' =>...