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When does invoking a member function on a null instance result in undefined behavior?
...efined behavior.
Here it's definitely undefined behavior.
The ambiguity comes from whether or not it's undefined behavior to deference but not use the value from an invalid pointer (that is, get an lvalue but not convert it to an rvalue). If not, then int *i = 0; *i; &(*i); is well-defined. T...
Should services always return DTOs, or can they also return domain models?
...domain models all the way to controllers, or should we always use DTOs for communication with service layer?
A DTO is a response/request object, it makes sense if you use it for communication. If you use domain models in your presentation layer (MVC-Controllers/View, WebForms, ConsoleApp), then th...
Why would finding a type's initializer throw a NullReferenceException?
...ere being no null values in my code. It only throws the exception when compiled with no debug information.
2 Answers
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Should I use Java date and time classes or go with a 3rd party library like Joda Time?
...d idea:
It's work. Why do work when it's already been done for you?
A newcomer to your team is much more likely to be familiar with Joda than with your homegrown API
You're likely to get it wrong for anything beyond the simplest uses... and even if you initially think you only need simple function...
How do I get the SharedPreferences from a PreferenceActivity in Android?
...ation. I am inflating the settings via a xml file so that my onCreate (and complete class methods) looks like this:
7 Answ...
How to define object in array in Mongoose schema correctly with 2d geo index
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Why do we have to normalize the input for an artificial neural network?
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It's explained well here.
If the input variables are combined linearly, as in an MLP [multilayer perceptron], then it is
rarely strictly necessary to standardize the inputs, at least in theory. The
reason is that any rescaling of an input vector can be effectively undone by...
AngularJs: How to check for changes in file input fields?
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No binding support for File Upload control
https://github.com/angular/angular.js/issues/1375
<div ng-controller="form-cntlr">
<form>
<button ng-click="selectFile()">Upload Your File</button>
<input type="file" style="d...
IntelliJ 13 - Add Navigate Back/Forward to toolbar?
...oups are:
file | undo/redo | cut/copy/paste | font size | back/forward | compile/run | vcs | config | help | jira | tasks
You should be looking at the back/forward buttons in the 5th group.
If you want to make the toolbar visible, it's one of the checkable options on the view menu.
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