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Java 8 NullPointerException in Collectors.toMap
...s.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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What is object serialization?
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is this obligatory ? do I must serialize data before sending it? what format is it converted to ?
– Francisco Corrales Morales
Jul 31 '14 at 14:42
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Unit Testing AngularJS directive with templateUrl
...e setup: karma config, templates, and tests.
A Non-Karma Solution
If you do not use Karma for whatever reason (I had an inflexible build process in legacy app) and are just testing in a browser, I have found that you can get around ngMock's takeover of $httpBackend by using a raw XHR to fetch the ...
Landscape printing from HTML
...eds to be printed landscape because of the many columns. It there a way to do this, without the user having to change the document settings?
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How to compare two NSDates: Which is more recent?
...e {
NSLog(@"dates are the same");
}
Please refer to the NSDate class documentation for more details.
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Why are these constructs using pre and post-increment undefined behavior?
...predict the behavior when the code is run.
As far as I know, the standard doesn't explicitly say why the concept of undefined behavior exists. In my mind, it's simply because the language designers wanted there to be some leeway in the semantics, instead of i.e. requiring that all implementations h...
How to tell if a string is not defined in a Bash shell script
If I want to check for the null string I would do
12 Answers
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How to draw a rounded Rectangle on HTML Canvas?
...at there are only can fill rectangle, but no rounded corner one, how can I do that?
12 Answers
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Managing constructors with many parameters in Java
... projects, there's an class hierarchy that adds more parameters as it goes down the chain. At the bottom, some of the classes can have up to 30 parameters, 28 of which are just being passed into the super constructor.
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Ant: How to execute a command for each file in directory?
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So, I have to include something? Or do I need some external ant lib? I'm getting "Problem: failed to create task or type foreach". If I understand correctly, this means, foreach is an unknown keyword.
– ivan_ivanovich_ivanoff
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