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Prevent segue in prepareForSegue method?
...have to implement the method
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender
In your view controller. You do your validation there, and if it's OK then return YES; if it's not then return NO; and the prepareForSegue is not called.
Note that this method doesn't...
Add x and y labels to a pandas plot
...abel')
plt.ylabel('ylabel')
plt.show()
Obviously you have to replace the strings 'xlabel' and 'ylabel' with what you want them to be.
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Spring @PropertySource using YAML
...ry {
@Override
public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException {
if (resource == null){
return super.createPropertySource(name, resource);
}
return new YamlPropertySourceLoader().load(resource....
How to output messages to the Eclipse console when developing for Android
...tialized or not.
Log.d, Log.v, Log.w etc methods only allow you to print strings to the console and not objects. To circumvent this (if you desire), you must use String.format.
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AngularJS Directive Restrict A vs E
I'm working in a small team, building in AngularJS and trying to maintain some basic standards & best practices; especially given we're relatively new with Angular.
...
How to hide the title bar for an Activity in XML with existing custom theme
....xml:
<activity android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
or use android:theme="@android:style/Theme.Black.NoTitleBar" if you don't need a fullscreen Activity.
Note: If you've used a ...
Simple way to convert datarow array to datatable
...ework 3.5+
DataTable dt = new DataTable();
DataRow[] dr = dt.Select("Your string");
DataTable dt1 = dr.CopyToDataTable();
But if there is no rows in the array, it can cause the errors such as The source contains no DataRows. Therefore, if you decide to use this method CopyToDataTable(), you shoul...
Calling startActivity() from outside of an Activity context
I have implemented a ListView in my Android application. I bind to this ListView using a custom subclass of the ArrayAdapter class. Inside the overridden ArrayAdapter.getView(...) method, I assign an OnClickListener . In the onClick method of the OnClickListener , I want to launch a n...
Automatic HTTPS connection/redirect with node.js/express
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Don't treat urls as strings, use the url module instead.
– arboreal84
Jul 28 '16 at 18:07
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navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't
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You should not use function inside string. Evil eval works there unnessesarrily. setTimeout("geolocFail()", 10000);
– localhoost
Aug 23 '17 at 16:45
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