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Why is char[] preferred over String for passwords?
... believe this is implementation-specific - the garbage collector may clear all memory as it goes, to avoid this sort of thing. Even if it does, there's still the time during which the char[] contains the actual characters as an attack window.
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Uses for Optional
...tween wanting to use it everywhere something may be null , and nowhere at all.
14 Answers
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disable the swipe gesture that opens the navigation drawer in android
...ried but it was diabled open and close, both. I were testing on android 2.3x with ActionBarSherlock framework.
– thanhnh
Jul 26 '13 at 4:46
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Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...}
And here's the original implementation I suggested, which may be marginally slower, but a bit easier to follow:
static readonly string[] SizeSuffixes =
{ "bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
static string SizeSuffix(Int64 value, int decimalPlaces = 1)
{...
How to gracefully handle the SIGKILL signal in Java
...uts down in response to two kinds of events:
The program exits normally, when the last non-daemon thread exits or when the exit (equivalently, System.exit) method is invoked, or
The virtual machine is terminated in response to a user interrupt, such as typing ^C, or a system-wide event, su...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...ve of your .app file. Does having two targets make that process harder at all? Thanks.
– Crystal
May 16 '13 at 2:55
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Getting the last element of a list
...ist[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the first element.
You can also set list elements in this way. For instance:
>>> some_list = [1, 2, 3]
>>> some_list[-1] = 5 # Set the last e...
Stop setInterval call in JavaScript
I am using setInterval(fname, 10000); to call a function every 10 seconds in JavaScript. Is it possible to stop calling it on some event?
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Sticky and NON-Sticky sessions
..., a session object is created and remains in the memory of the web server. All the requests from the client go to this web server and update this session object. If some data needs to be stored in the session object over the period of interaction, it is stored in this session object and stays there ...
What is the meaning of the term arena in relation to memory?
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An arena is just a large, contiguous piece of memory that you allocate once and then use to manage memory manually by handing out parts of that memory. For example:
char * arena = malloc(HUGE_NUMBER);
unsigned int current = 0;
void * my_malloc(size_t n) { current += n; return arena +...