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How to determine if binary tree is balanced?
...
Stumbled across this old question while searching for something else. I notice that you never did get a complete answer.
The way to solve this problem is to start by writing a specification for the function you are trying to write.
Specification: A well-formed binary tree ...
How can I match a string with a regex in Bash?
...fer and more powerful. See What is the difference between test, [ and [[ ? for details.
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How to get a key in a JavaScript object by its value?
...n associative array. Is there a simple function allowing me to get the key for a value, or do I have to iterate the object and find it out manually?
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How to combine two or more querysets in a Django view?
I am trying to build the search for a Django site I am building, and in that search, I am searching in 3 different models. And to get pagination on the search result list, I would like to use a generic object_list view to display the results. But to do that, I have to merge 3 querysets into one.
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Can someone explain Microsoft Unity?
...nd IoC then you understand that what you're doing is inverting the control for when an object gets created.
Without IoC:
public class MyClass
{
IMyService _myService;
public MyClass()
{
_myService = new SomeConcreteService();
}
}
With IoC container:
public class MyClas...
“Keep Me Logged In” - the best approach
My web application uses sessions to store information about the user once they've logged in, and to maintain that information as they travel from page to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
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How do I use raw_input in Python 3
...'t get the raw_input to "freeze" the dos pop-up. The book I'm reading is for Python 2.5 and I'm using Python 3.1
8 Answer...
New lines inside paragraph in README.md
...markdown, but the most recent help document no longer lists this feature.
Fortunately, you can do it manually. The easiest way is to ensure that each line ends with two spaces. So, change
a
b
c
into
a__
b__
c
(where _ is a blank space).
Or, you can add explicit <br /> tags.
a <br /...
What happened to “HelveticaNeue-Italic” on iOS 7.0.3
...e developer preview of iOS 7.1. Here is code (provided by Apple in the dev forums) to workaround the issue:
#import <CoreText/CoreText.h>
CGFloat size = 14;
UIFont *font = [UIFont fontWithName:@"HelveticaNeue-Italic" size:size];
if (font == nil && ([UIFontDescriptor class] != nil)) {...
How to set -source 1.7 in Android Studio and Gradle
...h resources require minSdkVersion 19. Other features works on previous platforms.
Link to android gradle plugin user guide
Link to see how source vs target are different
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