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Check whether user has a Chrome extension installed
I am in the process of building a Chrome extension, and for the whole thing to work the way I would like it to, I need an external JavaScript script to be able to detect if a user has my extension installed.
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Use of def, val, and var in scala
... found that this happens because I used def in def person = new Person("Kumar",12) . If I use var or val the output is 20 . I understand the default is val in scala. This:
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How to navigate through textfields (Next / Done Buttons)
How can I navigate through all my text fields with the "Next" Button on the iPhone Keyboard?
34 Answers
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Checking Bash exit status of several commands efficiently
Is there something similar to pipefail for multiple commands, like a 'try' statement but within bash. I would like to do something like this:
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When should I use C++ private inheritance?
Unlike protected inheritance, C++ private inheritance found its way into mainstream C++ development. However, I still haven't found a good use for it.
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How to set default value for form field in Symfony2?
Is there an easy way to set a default value for text form field?
22 Answers
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What is the purpose of the “final” keyword in C++11 for functions?
...to declare as non-virtual your final functions? Is there another thing I'm missing here?
10 Answers
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How to know user has clicked “X” or the “Close” button?
In MSDN I found CloseReason.UserClosing to know that the user had decided to close the form
but I guess it is the same for both clicking the X button or clicking the close button.
So how can I differentiate between these two in my code?
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Can I use Objective-C blocks as properties?
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@property (nonatomic, copy) void (^simpleBlock)(void);
@property (nonatomic, copy) BOOL (^blockWithParamter)(NSString *input);
If you are going to be repeating the same block in several places use a type def
typedef void(^MyCompletionBlock...
Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
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