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How can I implement a tree in Python?
I am trying to construct a General tree.
17 Answers
17
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What are the differences between git branch, fork, fetch, merge, rebase and clone?
... doesn't work well you will find that git merge --abort is very handy to reset things.
Interactive rebasing and squashing / reordering / removing commits
If you have done work in a lot of small steps, e.g., you commit code as 'work-in-progress' every day, you may want to 'squash' those many small...
What's the best way to share data between activities?
...rivate String data;
public String getData() {return data;}
public void setData(String data) {this.data = data;}
private static final DataHolder holder = new DataHolder();
public static DataHolder getInstance() {return holder;}
}
From the launched activity:
String data = DataHolder.getIns...
What's the best way to detect a 'touch screen' device using JavaScript?
I've written a jQuery plug-in that's for use on both desktop and mobile devices. I wondered if there is a way with JavaScript to detect if the device has touch screen capability. I'm using jquery-mobile.js to detect the touch screen events and it works on iOS, Android etc., but I'd also like to writ...
What do < and > stand for?
I know that the entities &lt; and &gt; are used for < and > , but I am curious what these names stand for.
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Xcode + remove all breakpoints
Is there any way to remove all the breakpoints in Xcode?
12 Answers
12
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return statement vs exit() in main()
Should I use exit() or just return statements in main() ? Personally I favor the return statements because I feel it's like reading any other function and the flow control when I'm reading the code is smooth (in my opinion). And even if I want to refactor the main() function, having return...
NSString property: copy or retain?
Let's say I have a class called SomeClass with a string property name:
10 Answers
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How to validate phone numbers using regex
I'm trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
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Determine the number of NA values in a column
I want to count the number of NA values in a data frame column. Say my data frame is called df , and the name of the column I am considering is col . The way I have come up with is following:
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