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Using {} in a case statement. Why?
What is the point with using { and } in a case statement? Normally, no matter how many lines are there in a case statement, all of the lines are executed. Is this just a rule regarding older/newer compilers or there is something behind that?
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How to get a password from a shell script without echoing
...ds access to a password protected system. The system is accessed via a command-line program that accepts the user password as an argument.
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How to save/restore serializable object to/from file?
I have a list of objects and I need to save that somewhere in my computer. I have read some forums and I know that the object has to be Serializable . But it would be nice if I can get an example. For example if I have the following:
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How can I decompress a gzip stream with zlib?
... a bad stream format. By default, zlib creates streams with a zlib header, and on inflate does not recognise the different gzip header unless you tell it so. Although this is documented starting in version 1.2.1 of the zlib.h header file, it is not in the zlib manual. From the header file:
windo...
Object of custom type as dictionary key
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You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...lues. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
2 Answers
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How to implement a confirmation (yes/no) DialogPreference?
....setTitle("Title")
.setMessage("Do you really want to whatever?")
.setIcon(android.R.drawable.ic_dialog_alert)
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Toast.makeText(MainActivity.this...
Imitate Facebook hide/show expanding/contracting Navigation Bar
...wing property:
@property (nonatomic) CGFloat previousScrollViewYOffset;
And here are the UIScrollViewDelegate methods:
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGRect frame = self.navigationController.navigationBar.frame;
CGFloat size = frame.size.height - 21;
CGFloat...
WordPress asking for my FTP credentials to install plugins
...tumbling upon this answer while googling, so I post a note here for myself and others: The Code is in wp-admin/includes/file.php:get_filesystem_method. Wordpress tries to create a file 'wp-content/temp-write-test-'.time(). If this fails it assumes that you can only use FTP. But this might not be tru...
What is the difference between RegExp’s exec() function and String’s match() function?
...ch, in array form.
}
// No more matches.
String.match does this for you and discards the captured groups.
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