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What is the difference between float and double?
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the d...
php execute a background process
...d to $pidfile.
That lets you easily monitor what the process is doing and if it's still running.
function isRunning($pid){
try{
$result = shell_exec(sprintf("ps %d", $pid));
if( count(preg_split("/\n/", $result)) > 2){
return true;
}
}catch(Exception ...
Cannot overwrite model once compiled Mongoose
...one: req.body.phone
, _enabled:false
});
new_user.save(function(err){
if(err) console.log(err);
});
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Eloquent Collection: Counting and Detect Empty
This may be a trivial question but I am wondering if Laravel recommends a certain way to check whether an Eloquent collection returned from $result = Model::where(...)->get() is empty, as well as counting the number of elements.
...
FFMPEG (libx264) “height not divisible by 2”
... I think it's a multi-pixel color format, that needs the image to be a specific size. Not sure why it matters compressed, though.
– lahwran
Oct 18 '15 at 23:20
7
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How to redirect from OnActionExecuting in Base Controller?
...oid OnActionExecuting(ActionExecutingContext filterContext)
{
...
if (needToRedirect)
{
...
filterContext.Result = new RedirectResult(url);
return;
}
...
}
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Instance attribute attribute_name defined outside __init__
...assed to the parent through Super. This makes extending some classes very difficult, because the parent class will operate on the child specific class attributes in ways that are undesireable. This is why I have ignored this particular warning myself. I also like your idea about using None and initi...
How do I use LINQ Contains(string[]) instead of Contains(string)
...tring> from string[] first. Actually a List<int> would be better if uid is also int. List<T> supports Contains(). Doing uid.ToString().Contains(string[]) would imply that the uid as a string contains all of the values of the array as a substring??? Even if you did write the exten...
How to check if a string is a valid JSON string in JavaScript without using Try/Catch
...
A comment first. The question was about not using try/catch.
If you do not mind to use it, read the answer below.
Here we just check a JSON string using a regexp, and it will work in most cases, not all cases.
Have a look around the line 450 in https://github.com/douglascrockford/JSON...
Is there any standard for JSON API response format?
...uring JSON responses from an API? Obviously, every application's data is different, so that much I'm not concerned with, but rather the "response boilerplate", if you will. An example of what I mean:
...