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Is there shorthand for returning a default value if None in Python? [duplicate]
In C#, I can say x ?? "" , which will give me x if x is not null, and the empty string if x is null. I've found it useful for working with databases.
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Why is Spring's ApplicationContext.getBean considered bad?
... ApplicationContext.getBean() should be avoided as much as possible. Why is that?
14 Answers
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Checkout another branch when there are uncommitted changes on the current branch
Most of the time when I try to checkout another existing branch, Git doesn't allow me if I have some uncommitted changes on the current branch. So I'll have to commit or stash those changes first.
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JavaScript by reference vs. by value [duplicate]
...n and when not. I'm also interested in when assigning to another variable is by reference vs. by value and whether that follows any different rules than passing as a function parameter.
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Is there a “theirs” version of “git merge -s ours”?
...ng will merge in the desired way.
The only thing I've seen cause problems is if files were deleted from branchB. They show up as conflicts if something other than git did the removal.
The fix is easy. Just run git rm with the name of any files that were deleted:
git rm {DELETED-FILE-NAME}
After...
Business logic in MVC [closed]
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Business rules go in the model.
Say you were displaying emails for a mailing list. The user clicks the "delete" button next to one of the emails, the controller notifies the model to delete entry N, then notifies the view the model has changed.
Perhaps the admin's email...
What is the HMVC pattern?
...ohana's documentation, I found out that the main difference in 3.0 version is that it follows the HMVC pattern instead of MVC as version 2.x does. The page about this in Kohana's docs and the one on wikipedia didn't really give me a clear idea.
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Printing a variable memory address in swift
Is there anyway to simulate the [NSString stringWithFormat:@"%p", myVar] , from Objective-C, in the new Swift language?
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String is immutable. What exactly is the meaning? [duplicate]
...g class and its functionality a little before coming to any conclusion.
This is how String works:
String str = "knowledge";
This, as usual, creates a string containing "knowledge" and assigns it a reference str. Simple enough? Lets perform some more functions:
String s = str; // assigns a ...
Why start an ArrayList with an initial capacity?
The usual constructor of ArrayList is:
11 Answers
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