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What are the differences between “generic” types in C++ and Java?
...+" operator available.
In Java you have to specify a type if you want to call methods on the objects passed, something like:
<T extends Something> T sum(T a, T b) { return a.add ( b ); }
In C++ generic functions/classes can only be defined in headers, since the compiler generates different...
Filter by process/PID in Wireshark
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I don't see how. The PID doesn't make it onto the wire (generally speaking), plus Wireshark allows you to look at what's on the wire - potentially all machines which are communicating over the wire. Process IDs aren't unique across different machines, anyway.
...
How does data binding work in AngularJS?
..., then it fires the change event.
The $apply() method, which is what you call when you are transitioning from a non-AngularJS world into an AngularJS world, calls $digest(). A digest is just plain old dirty-checking. It works on all browsers and is totally predictable.
To contrast dirty-checking (...
How to fetch all Git branches
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You can fetch all branches from all remotes like this:
git fetch --all
It's basically a power move.
fetch updates local copies of remote branches so this is always safe for your local branches BUT:
fetch will not update local branch...
When is layoutSubviews called?
...actice and here is what I got:
init does not cause layoutSubviews to
be called (duh)
addSubview: causes
layoutSubviews to be called on the
view being added, the view it’s being
added to (target view), and all the
subviews of the target
view setFrame
intelligently calls layoutSubviews on
the vie...
Why is it impossible to build a compiler that can determine if a C++ function will change the value
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@mrsoltys, quantum computers are "only" exponentially faster for some problems, they can not solve undecidable problems.
– zch
Jul 1 '13 at 18:52
8
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What is the difference between $(command) and `command` in shell programming?
... for portability issues it is recommended to use backticks for non-nested calls. $(...) needs a recursive parser but this was not used with ksh86 that introduced the feature. Check in-ulm.de/~mascheck/various/cmd-subst for a list of correct implementations. A conforming shell needs to support all c...
What is the difference between a URI, a URL and a URN?
...tion"). The term "Uniform Resource Name"
(URN) has been used historically to refer to both URIs under the
"urn" scheme [RFC2141], which are required to remain globally unique
and persistent even when the resource ceases to exist or becomes
unavailable, and to any other URI with ...
How do I find out which DOM element has the focus?
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Use document.activeElement, it is supported in all major browsers.
Previously, if you were trying to find out what form field has focus, you could not. To emulate detection within older browsers, add a "focus" event handler to all fields and record the last-focused field...
Indenting code in Sublime text 2?
...ork either check whether user defined keybindings are disabled on your installation for some reason.
– Bernd Elkemann
Dec 13 '12 at 14:03
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