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How to hash some string with sha256 in Java?
How can I hash some string with sha256 in Java? Does anybody know of any free library for this?
15 Answers
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What is the function of the push / pop instructions used on registers in x86 assembly?
...e terms. For read-only locals spilled to the stack, the main cost is just extra load uops (sometimes memory operands, sometimes with separate mov loads). For spilled non-const variables, the store-forwarding round trips are a lot of extra latency (an extra ~5c vs. forwarding directly, and the stor...
How to configure logging to syslog in Python?
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I add a little extra comment just in case it helps anyone because I found this exchange useful but needed this little extra bit of info to get it all working.
To log to a specific facility using SysLogHandler you need to specify the facili...
Clicking the back button twice to exit an activity
... }
this.doubleBackToExitPressedOnce = true;
Toast.makeText(this, R.string.exit_press_back_twice_message, Toast.LENGTH_SHORT).show();
}
And it just works exactly as I want. Including the reset of the state whenever the activity is resumed.
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Get time difference between two dates in seconds
...act them and divide by 1000 (since it's originally in milliseconds). As an extra, when you're calling the getDate() method, you're in fact getting the day of the month as an integer between 1 and 31 (not zero based) as opposed to the epoch time you'd get from calling the getTime() method, representi...
How to develop or migrate apps for iPhone 5 screen resolution?
...g masks will work if you need different graphics.
-(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
NSString *myNibName;
if ([MyDeviceInfoUtility isiPhone5]) myNibName = @"MyNibIP5";
else myNibName = @"MyNib";
if ((self = [super initWithNibName:myNibN...
Binding an enum to a WinForms combo box, and then setting it
...item
Status status;
Enum.TryParse<Status>(cbStatus.SelectedValue.ToString(), out status);
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What are all the uses of an underscore in Scala?
...ame: => Int): () => Int = callByName _
Default initializer
var x: String = _ // unloved syntax may be eliminated
There may be others I have forgotten!
Example showing why foo(_) and foo _ are different:
This example comes from 0__:
trait PlaceholderExample {
def process[A](f: A =...
#1071 - Specified key was too long; max key length is 1000 bytes
...e best practice is to use prefix indexes so you're only indexing a left substring of the data. Most of your data will be a lot shorter than 255 characters anyway.
You can declare a prefix length per column as you define the index. For example:
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KEY `index` (`parent_menu_id`,`menu_link`(50),`p...
How long does it take for GitHub page to show changes after changing index.html
...ew files. If you want to test it (or break a cache) you can append a query string like myfile.jpg?ver=123 and every time you update the string the cache will bust, and you can verify that the CDN is updating.
– Joel Glovier
Dec 19 '16 at 14:10
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