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What is hashCode used for? Is it unique?
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This is from the msdn article here:
https://blogs.msdn.microsoft.com/tomarcher/2006/05/10/are-hash-codes-unique/
"While you will hear people state that hash codes generate a unique value for a given input, the fact is that, while difficult to accomplish, it is...
How to convert strings into integers in Python?
I have a tuple of tuples from a MySQL query like this:
15 Answers
15
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...olves them.
This is discussed here by one of the MySQL development team:
http://jorgenloland.blogspot.co.uk/2013/02/dbt-3-q3-6-x-performance-in-mysql-5610.html
So the summary is: If you've been avoiding joins in the past because of MySQL's abysmal performance with them, then try again on the late...
What's the difference between event.stopPropagation and event.preventDefault?
...k(function () {
alert("parent click event fired!")
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="foo">
<button id="but">button</button>
</div>
stopPropagation
$("#but").click(function (ev...
Make an image width 100% of parent div, but not bigger than its own width
I’m trying to get an image (dynamically placed, with no restrictions on dimensions) to be as wide as its parent div, but only as long as that width isn’t wider than its own width at 100%. I’ve tried this, to no avail:
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Why does @foo.setter in Python not work for me?
So, I'm playing with decorators in Python 2.6, and I'm having some trouble getting them to work. Here is my class file:
4 A...
GestureDetect 扩展：手势检测扩展，识别滑动、点击和长按手势 · App Inventor 2 中文网
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Table name as variable
I am trying to execute this query:
10 Answers
10
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How can I have linebreaks in my long LaTeX equations?
My equation is very long. How do I get it to continue on the next line rather than go off the page?
11 Answers
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How do you scroll up/down on the Linux console?
I recognize that Up / Down will give you the command history. But, how do you look at past output by scrolling up and down?
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