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Is there a reason that we cannot iterate on “reverse Range” in ruby?
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A range is just that: something defined by its start and end, not by its contents. "Iterating" over a range doesn't really make sense in a general case. Consider, for example, how you would "iterate" over the range produced by two dates. Would you i...
What causes javac to issue the “uses unchecked or unsafe operations” warning
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This comes up in Java 5 and later if you're using collections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe ...
Android Studio Google JAR file causing GC overhead limit exceeded error
I am using Android Studio on OS X. I am getting this error message:
12 Answers
12
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php stdClass to array
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The lazy one-liner method
You can do this in a one liner using the JSON methods if you're willing to lose a tiny bit of performance (though some have reported it being faster than iterating through the objects recursively - most likely because...
How to perform Callbacks in Objective-C
...ive C are done with delegates. Here's an example of a custom delegate implementation;
Header File:
@interface MyClass : NSObject {
id delegate;
}
- (void)setDelegate:(id)delegate;
- (void)doSomething;
@end
@interface NSObject(MyDelegateMethods)
- (void)myClassWillDoSomething:(MyClass *)myCl...
Zoom to fit all markers in Mapbox or Leaflet
...ker1, marker2, marker3]);
map.fitBounds(group.getBounds());
See the documentation for more info.
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
...k that the directory the keytool executable is in is on your %PATH% environment variable.
For example, on my Windows 7 machine, it is in
C:\Program Files (x86)\Java\jre6\bin, and my %PATH% variable looks like C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Java\jre6...
setResult does not work when BACK button pressed
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You need to overide the onBackPressed() method and set the result before the call to superclass, i.e
@Override
public void onBackPressed() {
Bundle bundle = new Bundle();
bundle.putString(FIELD_A, mA.getText().toString());
Intent mIntent = new Inte...
Combining two expressions (Expression)
... want to take to OR, AND or NOT of these and get a new expression of the same type
7 Answers
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How to extract the hostname portion of a URL in JavaScript
... you'll get sub.domain.com:8080 or sub.domain.com:80
window.location.hostname : you'll get sub.domain.com
window.location.protocol : you'll get http:
window.location.port : you'll get 8080 or 80
window.location.pathname : you'll get /virtualPath
window.location.origin : you'll get http://sub.domain....