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Javascript communication between browser tabs/windows [duplicate]
...ext without having a reference to it:
var channel = new BroadcastChannel("foo");
channel.onmessage = function( e ) {
// Process messages from other contexts.
};
// Send message to other listening contexts.
channel.postMessage({ value: 42, type: "bar"});
Obviously this is experiental technology ...
SourceKitService Terminated
...
SourceKitService crashes on my system as soon as I type
extension foo {
I'm using Xcode 6 beta 6 and it does not matter if I type it into an empty file or add it to an existing one. As soon as the source contains one extension block, it will crash. This happens even on newly created proje...
How should I print types like off_t and size_t?
...s _t types come with their own printf macros, so something like "Size is " FOO " bytes." I don't know details, but that's part of a fairly large numeric format include file.
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Access-Control-Allow-Origin Multiple Origin Domains?
...n knows that it should send one response to a request with header "Origin: foo.example.com", and a different response to a request with header "Origin: bar.example.com".
– Sean
Jan 11 '13 at 17:34
...
How do I properly compare strings in C?
..."equal") even if one string is only prefix of the other one (for example, "foo" and "foobar").
– lukasrozs
Oct 6 '17 at 14:16
1
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Mapping a function on the values of a map in Clojure
...it's idiomatic. Here's a version using list comprehension anyways.
(defn foo [m f]
(into {} (for [[k v] m] [k (f v)])))
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Android: How to enable/disable option menu item on button click?
... // You can also use something like:
// menu.findItem(R.id.example_foobar).setEnabled(false);
}
return true;
}
On Android 3.0 and higher, the options menu is considered to always be open when menu items are presented in the action bar. When an event occurs and you want to perform a...
C++ performance vs. Java/C#
... C++ is still usually faster than java, mainly because of lighter memory footprint that result in better cache performance.
But to use all of C++ capability you, the developer must work hard. You can achieve superior results, but you must use your brain for that. C++ is a language that decided to...
Triggering HTML5 Form Validation
...whatever. The following code works for me:
<form>
<input name="foo" required>
<button id="submit">Submit</button>
</form>
<script>
$('#submit').click( function(e){
var isValid = true;
$('form input').map(function() {
isValid &= this.validity['...
What does (x ^ 0x1) != 0 mean?
...4 ^ 0x1 is true, but 4==0 is obviously false.
– Fred Foo
Dec 19 '13 at 10:54
4
"condition seems t...