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What is the difference between typeof and instanceof and when should one be used vs. the other?
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answered Jul 8 '11 at 14:30
Szymon WygnańskiSzymon Wygnański
8,91666 gold badges2727 silver badges4444 bronze badges
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Was PreferenceFragment intentionally excluded from the compatibility package?
I'm looking to write preferences that can be applied to both 3.0 and pre-3.0 devices. Discovering that PreferenceActivity contains deprecated methods (although these are used in the accompanying sample code), I looked at PreferenceFragement and the compatibility package to solve my woes.
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Check if a given key already exists in a dictionary and increment it
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answered Jan 23 '09 at 14:38
dF.dF.
64.2k2727 gold badges123123 silver badges134134 bronze badges
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How to cancel/abort jQuery AJAX request?
... also contains a readyState which contains the state of the request(UNSENT-0, OPENED-1, HEADERS_RECEIVED-2, LOADING-3 and DONE-4). we can use this to check whether the previous request was completed.
$(document).ready(
var xhr;
var fn = function(){
if(xhr && xhr.readyState ...
What is the best way to find the users home directory in Java?
The difficulty is that it should be cross platform. Windows 2000, XP, Vista, OSX, Linux, other unix variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.
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Return string without trailing slash
...ingSlash(str) {
if(str.substr(-1) === '/') {
return str.substr(0, str.length - 1);
}
return str;
}
Note: IE8 and older do not support negative substr offsets. Use str.length - 1 instead if you need to support those ancient browsers.
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Remove All Event Listeners of Specific Type
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@user10089632 It is not possible with native JS APIs.
– plalx
Nov 8 '17 at 12:50
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How do I correctly clone a JavaScript object?
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70 Answers
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What is this 'Lambda' everyone keeps speaking of?
...e most important part of the loop, and abstract away the rest:
for (var i=0; i<array.length; i++) {
// do what something useful with array[i]
}
by using the forEach of array objects, becomes:
array.forEach(function (element, index) {
// do something useful with element
// element is...