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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 refresh Android listview?
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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.
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The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity mem
...is code in Entity Framework I receive the following error. I need to get all the rows for a specific date, DateTimeStart is of type DataType in this format 2013-01-30 12:00:00.000
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android.widget.Switch - on/off event listener?
...ener to change the state & passed the switch to method(in my case API call) & then used the setChecked() method to change the state(like in onFailure/onError in API call). Hope that helps.
– deepak kumar
Feb 21 at 9:09
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How to find all positions of the maximum value in a list?
...that tracks the current max and its position might be more efficient for really long lists.
– radtek
Jan 8 '15 at 18:42
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How can I start an interactive console for Perl?
...ms to provide the best almost-out-of-the-box solution (you may have to install rlwrap). All third-party REPL/console solutions, including perlconsole, are cumbersome to install and often have more limitations.
– mklement0
Jul 8 '15 at 3:09
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What does the NS prefix mean?
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Yes, of course. It's all beautifully laid out in the other answers, that's why I didn't bother copying that information into mine. Sorry if that offends someone - I don't mind if the accepted answer changes to one of the others (if that's possibl...
How to output in CLI during execution of PHP Unit tests?
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}
}
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...
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...
What is the email subject length limit?
How many characters are allowed to be in the subject line of Internet email?
I had a scan of The RFC for email but could not see specifically how long it was allowed to be.
I have a colleague that wants to programmatically validate for it.
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