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How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
...wer is 6 per domain: as soon as a 7th XmlHttpRequest (on any tab) to the same domain is fired, it is queued until one of the other 6 finish.
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Is asynchronous jdbc call possible?
...rap JDBC calls in Actors, executors or anything else can help here - can someone clarify.
Surely the basic problem is that the JDBC operations block on socket IO. When it does this it blocks the Thread its running on - end of story. Whatever wrapping framework you choose to use its going to end up ...
Typedef function pointer?
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typedef is a language construct that associates a name to a type.
You use it the same way you would use the original type, for instance
typedef int myinteger;
typedef char *mystring;
typedef void (*myfunc)();
using them like
myinteger i; // is equivalent to in...
What is a C++ delegate?
...le number of choices to achieve delegates in C++. Here are the ones that came to my mind.
Option 1 : functors:
A function object may be created by implementing operator()
struct Functor
{
// Normal class/struct members
int operator()(double d) // Arbitrary return types and parameter ...
If I have ACCESS_FINE_LOCATION already, can I omit ACCESS_COARSE_LOCATION?
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+1 but oddly, Google Maps doc recommend to use both: developers.google.com/maps/documentation/android/…
– alex
Feb 14 '14 at 0:21
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Why should I prefer to use member initialization lists?
I'm partial to using member initialization lists with my constructors... but I've long since forgotten the reasons behind this...
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Allow user to select camera or gallery for image
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You'll have to create your own chooser dialog merging both intent resolution results.
To do this, you will need to query the PackageManager with PackageManager.queryIntentActivities() for both original intents and create the final list of possible Intents with one new I...
How to include another XHTML in XHTML using JSF 2.0 Facelets?
...rc>. See also How to ajax-refresh dynamic include content by navigation menu? (JSF SPA).
<ui:define>/<ui:insert>
A more advanced way of including is templating. This includes basically the other way round. The master template page should use <ui:insert> to declare places to ins...
How do I navigate in the results of Diff
... diff and it looks great. But how do I go to the next page or the next document.
5 Answers
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Local file access with JavaScript
...irectly is possible via the Filesystem API, which is only supported by Chrome and Opera and may end up not being implemented by other browsers (with the exception of Edge). For details see Kevin's answer.
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