大约有 20,361 项符合查询结果(耗时:0.0543秒) [XML]

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How to create a listbox in HTML without allowing multiple selection?

I don't have much experience in HTML. I am looking to create a simple listbox, but one of the requirements is to DISALLOW multiple selection. Most of the code for listboxes goes like this - ...
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How to create a tuple with only one element

In the below example I would expect all the elements to be tuples, why is a tuple converted to a string when it only contains a single string? ...
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How to copy text to clipboard/pasteboard with Swift

I'm looking for a clean example of how to copy text to iOS clipboard that can then be used/pasted in other apps. 4 Answers ...
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emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?

What does this do? 3 Answers 3 ...
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Pragma in define macro

Is there some way to embed pragma statement in macro with other statements? 4 Answers ...
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Editing legend (text) labels in ggplot

I have spent hours looking in the documentation and on StackOverflow, but no solution seems to solve my problem. When using ggplot I can't get the right text in the legend, even though it's in my dataframe. I have tried scale_colour_manual , scale_fill_manual with different values for labels=...
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Take all my changes on the current branch and move them to a new branch in Git

I started work on what I thought would be a minor bug fix on my master branch. However, it has spiraled out of control to the point where I wish I had created a separate branch to do the development in the first place. ...
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Ruby/Rails: converting a Date to a UNIX timestamp

How would I get a UNIX timestamp (number of seconds since 1970 GMT) from a Date object in a Rails app? 5 Answers ...
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How is the AND/OR operator represented as in Regular Expressions?

I'm currently programming a vocabulary algorithm that checks if a user has typed in the word correctly. I have the following situation: The correct solution for the word would be "part1, part2". The user should be able to enter either "part1" (answer 1), "part2" (answer 2) or "part1, part2" (answer ...
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How to find the size of an array in postgresql

Is there any way to find a size of an array? 4 Answers 4 ...