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How to select the first element in the dropdown using jquery?
I want to know how to select the first option in all select tags on my page using jquery.
9 Answers
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Is < faster than
...- B < 0
A = B --> A - B = 0
A > B --> A - B > 0
Now, when A < B the subtraction has to borrow a high-bit for the subtraction to be correct, just like you carry and borrow when adding and subtracting by hand. This "borrowed" bit was usually referred to as the carry bit a...
Adding dictionaries together, Python [duplicate]
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@dimo414 Yes, my bad. I can't change it now however. I use ChainMap from collections to achieve this functionality now via dict(ChainMap(dic1, dic0)). However I have had to grab the source code from the chainmap pypi package for Python2.7. Notice how I switched the...
vim line numbers - how to have them on by default?
...this command anywhere in your terminal: echo "\nset nu" >> ~/.vimrc. Now exit and reopen terminal session.
– Kapil Jituri
Jan 31 at 6:02
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How can you make a custom keyboard in Android?
I want to make a custom keyboard. I don't know how to do it using XML and Java. The following picture is a model of the keyboard I want to make. It only needs numbers.
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opengl: glFlush() vs. glFinish()
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I actually know what glFlush and glFinish do, and I can't tell what that image is saying. What's on the left side and the right? Also, was that image released in the Public Domain or under some license that allows you to post it on the I...
Why C# implements methods as non-virtual by default?
...f" argument. From programmers?!
It seems to me like the coder who didn't know enough (or have enough time) to design their library for inheritance and/or extensibility is the coder who's produced exactly the library I'm likely to have to fix or tweak - exactly the library where the ability to overr...
When to use Storyboard and when to use XIBs
...ints that applied to iOS 7 and below don't apply to iOS 8 anymore (and are now marked as such). So while Storyboards inherently still have flaws, I revise my advice from don't use to selectively use where it makes sense.
Even now that iOS 9 is out, I would advise against to use caution when decidin...
What is getattr() exactly and how do I use it?
...here getattr can be useful.
you can't write object.x, because you don't know in advance which attribute you want (it comes from a string). Very useful for meta-programming.
you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will...
Write to file, but overwrite it if it exists
...he file if it doesn't exist, but overwrites it if it already exists. Right now this script just appends.
8 Answers
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