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How do you check if a variable is an array in JavaScript? [duplicate]
...structor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines.
If you are having issues with finding out if an objects property is an array, you must first check if...
How to output in CLI during execution of PHP Unit tests?
...
}
}
This lets you dump anything to your console at any time without all the unwanted output that comes along with the --verbose CLI option.
As other answers have noted, it's best to test output using the built-in methods like:
$this->expectOutputString('foo');
However, sometimes it's...
Replace line break characters with in ASP.NET MVC Razor view
... StringSplitOptions.None);
foreach(string line in lines)
{
_ = htmlContent.Append(line);
_ = htmlContent.AppendHtml(br);
}
return htmlContent;
}
share
|
improve thi...
Check free disk space for current partition in bash
I am writing an installer in bash. The user will go to the target directory and runs the install script, so the first action should be to check that there is enough space. I know that df will report all file systems, but I was wondering if there was a way to get the free space just for the partition...
How to refresh Android listview?
...
Call notifyDataSetChanged() on your Adapter object once you've modified the data in that adapter.
Some additional specifics on how/when to call notifyDataSetChanged() can be viewed in this Google I/O video.
...
horizontal line and right way to code it in html, css
...
If you really want a thematic break, by all means use the <hr> tag.
If you just want a design line, you could use something like the css class
.hline-bottom {
padding-bottom: 10px;
border-bottom: 2px solid #000; /* w...
How to print (using cout) a number in binary form?
...ter. FYI, casting doesn't work, the bitset variable is an object of some really arcane-looking bitset3ul (?!) class. Best to let the abstractions do the work!
– nirvanaswap
Mar 16 '16 at 5:39
...
What is the correct way to start a mongod service on linux / OS X?
I've installed mongodb and have been able to run it, work with it, do simple DB read / write type stuff. Now I'm trying to set up my Mac to run mongod as a service.
...
Converting pixels to dp
... Its funny how the answer is more helpful when it doesn't really answer the question -_- I thought I wanted what the question asked then I realized I didn't! So great answer. I do have a question. How can I obtain the last paramter for applyDimension? Can I just do getResource().getDi...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...n your machine.
Here are some options that I use.
Test your web page locally on Firefox, then deploy to your host.
or: Run a local server
Test on Firefox, Deploy to Host
Firefox currently allows Cross Origin Requests from files served from your hard drive
Your web hosting site will allow requ...