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Navigation bar show/hide
...ght work for you.
To hide the navigation bar:
[[self navigationController] setNavigationBarHidden:YES animated:YES];
To show it:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
Documentation for this method is available here.
To listen for a "double click" or double-tap, subc...
How can I make a UITextField move up when the keyboard is present - on starting to edit?
...n whenever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
-(void)keyboardWillShow {
// Animate the current view out of the way
if (self.view.frame.origin.y >= 0)
{
[self setViewMovedUp:YES];
}
else if (self.view.frame.origin.y &l...
launch sms application with an intent
...:
Intent sendIntent = new Intent(Intent.ACTION_VIEW);
sendIntent.setData(Uri.parse("sms:"));
You can add extras to populate your own message and such like this
sendIntent.putExtra("sms_body", x);
then just startActivity with the intent.
startActivity(sendIntent);
...
How can I rename a field for all documents in MongoDB?
...map = function (x) {
if (x.additional){
db.foo.update({_id:x._id}, {$set:{"name.last":x.name.additional}, $unset:{"name.additional":1}});
}
}
db.foo.find().forEach(remap);
In MongoDB 3.2 you can also use
db.students.updateMany( {}, { $rename: { "oldname": "newname" } } )
The general sy...
Drop rows with all zeros in pandas data frame
... pandas dropna() functionality to remove rows with some or all columns set as NA 's. Is there an equivalent function for dropping rows with all columns having value 0?
...
qmake: could not find a Qt installation of ''
...ult works for me.
$ aptitude show qt5-default
tells that
This package sets Qt 5 to be the default Qt version to be used when using
development binaries like qmake. It provides a default configuration for
qtchooser, but does not prevent alternative Qt installations from being used.
...
Redirect From Action Filter Attribute
...
Set filterContext.Result
With the route name:
filterContext.Result = new RedirectToRouteResult("SystemLogin", routeValues);
You can also do something like:
filterContext.Result = new ViewResult
{
ViewName = SharedVie...
Check whether number is even or odd
...) { even... } else { odd... }
This is because the low bit will always be set on an odd number.
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history.replaceState() example?
... this. A simpler solution might be to keep using replaceState() and simply set the document title manually document.title = "title"
– newshorts
Nov 7 '16 at 18:49
add a commen...
How to write a bash script that takes optional input arguments?
...l - 3.5.3 Shell Parameter Expansion [emphasis mine]:
If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is substituted.
If you only want to substitute a default value if the parameter is unset (but not if it's null, e.g. not if it's an empty ...