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Is there a unique Android device ID?
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It's known to be null sometimes, it's documented as "can change upon factory reset". Use at your own risk, and it can be easily changed on a rooted phone.
– Seva Alekseyev
Jun 23 '10 at 14:21
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Java Class that implements Map and keeps insertion order?
... kept sorted via a Comparator or the natural Comparable ordering of the elements.
Since it doesn't have to keep the elements sorted, LinkedHashMap should be faster for most cases; TreeMap has O(log n) performance for containsKey, get, put, and remove, according to the Javadocs, while LinkedHashMap ...
abort: no username supplied (see “hg help config”)
I have added repository and at the time of commit I get error as
6 Answers
6
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How to check if array element exists or not in javascript?
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Use typeof arrayName[index] === 'undefined'
i.e.
if(typeof arrayName[index] === 'undefined') {
// does not exist
}
else {
// does exist
}
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How do I store data in local storage using Angularjs?
Currently I am using a service to perform an action, namely
retrieve data from the server and then store the data on the server itself.
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Difference between “!==” and “==!” [closed]
Yesterday I stumbled over this when I modified PHP code written by someone else. I was baffled that a simple comparison ( if ($var ==! " ") ) didn't work as expected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! ...
Map over object preserving keys
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it looks to me like you're making an OBJECT into an object, or am i out of my mind?
– jsh
Sep 28 '15 at 18:22
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lodash multi-column sortBy descending
There's a nifty method to sort an array of objects based on several properties:
7 Answers
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How can I recall the argument of the previous bash command?
Is there a way in Bash to recall the argument of the previous command?
7 Answers
7
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PowerShell equivalent to grep -f
I'm looking for the PowerShell equivalent to grep --file=filename . If you don't know grep , filename is a text file where each line has a regular expression pattern you want to match.
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