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What happens when a duplicate key is put into a HashMap?
If I pass the same key multiple times to HashMap ’s put method, what happens to the original value? And what if even the value repeats? I didn’t find any documentation on this.
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How can I get Git to follow symlinks?
...d to work when I tried it. That behavior was however unwanted by me at the time, so I can't give you information beyond that.
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What's the use of session.flush() in Hibernate
... first applied in-memory and synchronized with the database during
flush time. The flush operation takes every entity state change and
translates it to an INSERT, UPDATE or DELETE statement.
The flushing st
Is it fine to have foreign key as primary key?
...business and system.
If your userId is unique and will be unique all the time, you can use userId as your primary key. But if you ever want to expand your system, it will make things difficult. I advise you to add a foreign key in table user to make a relationship with table profile instead of add...
What's the idiomatic syntax for prepending to a short python list?
...sert(0, x) form is the most common.
Whenever you see it though, it may be time to consider using a collections.deque instead of a list.
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jQuery: Get height of hidden element in jQuery
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I've actually resorted to a bit of trickery to deal with this at times. I developed a jQuery scrollbar widget where I encountered the problem that I don't know ahead of time if the scrollable content is a part of a hidden piece of markup or not. Here's what I did:
// try to grab the hei...
How can I find the number of arguments of a Python function?
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Adding to the above, I've also seen that the most of the times help() function really helps
For eg, it gives all the details about the arguments it takes.
help(<method>)
gives the below
method(self, **kwargs) method of apiclient.discovery.Resource instance
Retrieves a r...
Why doesn't C++ have a garbage collector?
...troustrup has said that C++ will have a garbage collector at some point in time.
16 Answers
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Set keyboard caret position in html textbox
...en set the value equal to itself) doesn't work cross-browser, I spent some time tweaking and editing everything to get it working. Building upon @kd7's code here's what I've come up with.
Enjoy! Works in IE6+, Firefox, Chrome, Safari, Opera
Cross-browser caret positioning technique (example: movin...
UIButton inside a view that has a UITapGestureRecognizer
...ion compiles down to void so it doesn't leave any information behind at runtime to use for detection. But what you can do is walk up the view hierarchy, testing for UIControl, and returning NO if you find any controls.
– Lily Ballard
Aug 3 '11 at 17:38
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