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How to make a vertical line in HTML

...the markup where you want the line to appear to next, and use CSS to style it: .verticalLine { border-left: thick solid #ff0000; } <div class="verticalLine"> some other content </div> share ...
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git reset --hard HEAD leaves untracked files behind

When I run git reset --hard HEAD , it's supposed to reset to a pristine version of what you pulled, as I understand it. Unfortunately, it leaves files lying around, as a git status shows a big list of untracked files. ...
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How to serialize SqlAlchemy result to JSON?

... fields = {} for field in [x for x in dir(obj) if not x.startswith('_') and x != 'metadata']: data = obj.__getattribute__(field) try: json.dumps(data) # this will fail on non-encodable values, like other classes fiel...
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What does character set and collation mean exactly?

I can read the MySQL documentation and it's pretty clear. But, how does one decide which character set to use? On what data does collation have an effect? ...
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Is there any way to prevent input type=“number” getting negative values?

I want to get only positive values, is there any way to prevent it using only html Please don't suggest validation method ...
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Is there an online name demangler for C++? [closed]

I'm getting a fairly long and confusing link error, and would love it if I could just paste it into some textbox on some website and have the names un-mangled for me. ...
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How to show all parents and subclasses of a class in IntelliJ IDEA?

When I'm editing a Java class in Eclipse, when my cursor is over a class variable, I can do Ctrl + T to have a popup that shows all its parents and subclasses. What is the equivalent in IntelliJ? ...
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Are there best practices for (Java) package organization? [closed]

A little while ago, I saw a question answered here regarding the fine-grained organization of java packages. For example, my.project.util , my.project.factory , my.project.service , etc. ...
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How to wait for a keypress in R?

...te in a comment, you don't have to use the cat before readline(). Simply write: readline(prompt="Press [enter] to continue") If you don't want to assign it to a variable and don't want a return printed in the console, wrap the readline() in an invisible(): invisible(readline(prompt="Press [enter...
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git visual diff between branches

...is great for seeing a visual diff between two files that are checked into git: How do I view 'git diff' output with a visual diff program? ...