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Is there a way to avoid null check before the for-each loop iteration starts? [duplicate]
Every time I have to iterate over a collection I end up checking for null, just before the iteration of the for-each loop starts. Like this:
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How should equals and hashcode be implemented when using JPA and Hibernate
...ss's equals and hashcode be implemented in Hibernate? What are the common pitfalls? Is the default implementation good enough for most cases? Is there any sense to use business keys?
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Insert a commit before the root commit in Git?
I've asked before about how to squash the first two commits in a git repository.
15 Answers
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How to make my custom type to work with “range-based for loops”?
... have been trying the different features that C++11 brings. One of my favorites is the "range-based for loops".
8 Answers
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Insert code into the page context using a content script
...ions. I just started developing one to catch YouTube events. I want to use it with YouTube flash player (later I will try to make it compatible with HTML5).
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How to check if object has any properties in JavaScript?
...f (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty() method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
Edit
From the comments: You can put t...
.gitignore and “The following untracked working tree files would be overwritten by checkout”
So I added a folder to my .gitignore file.
29 Answers
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Default value to a parameter while passing by reference in C++
Is it possible to give a default value to a parameter of a function while we are passing the parameter by reference. in C++
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Could not find any resources appropriate for the specified culture or the neutral culture
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I just hit this same exception in a WPF project. The issue occurred within an assembly that we recently moved to another namespace (ProblemAssembly.Support to ProblemAssembly.Controls). The exception was happening when trying to ac...
Removing duplicate rows in Notepad++
Is it possible to remove duplicated rows in Notepad++, leaving only a single occurrence of a line?
12 Answers
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