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Hidden features of Python [closed]
...ue
In case you're thinking it's doing 1 < x, which comes out as True, and then comparing True < 10, which is also True, then no, that's really not what happens (see the last example.) It's really translating into 1 < x and x < 10, and x < 10 and 10 < x * 10 and x*10 < 100, but...
Multiple submit buttons on HTML form – designate one button as default [duplicate]
...n; }
#buttons input { float: right; }
will effectively reverse the order and thus the "Next" button will be the value triggered by hitting enter.
This kind of technique will cover many circumstances without having to resort to more hacky JavaScript methods.
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Reverting a single file to a previous version in git [duplicate]
... to go through different commits on a file.
Say I modified a file 5 times and I want to go back to change 2, after I already committed and pushed to a repository.
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Table fixed header and scrollable body
I am trying to make a table with fixed header and a scrollable content using the bootstrap 3 table.
Unfortunately the solutions I have found does not work with bootstrap or mess up the style.
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How to go back in Eclipse?
...'m jumping around a big project following the execution flow (ctrl + click and etc.), is there a way to retrace a step? If my code calls a method and I go to the method definition, is there a key combination that will take me back to the calling code?
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What's the difference between the 'ref' and 'out' keywords?
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The ref modifier means that:
The value is already set and
The method can read and modify it.
The out modifier means that:
The Value isn't set and can't be read by the method until it is set.
The method must set it before returning.
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
In multiple courses, books, and jobs, I have seen text fields defined as VARCHAR(255) as kind of the default for "shortish" text. Is there any good reason that a length of 255 is chosen so often, other than being a nice round number ? Is it a holdout from some time in the past when there was a go...
What killed my process and why?
... runs as a background process on Linux. It is currently started at the command line in a Terminal window.
14 Answers
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When do you use map vs flatMap in RxJava?
...em, just throw it with a Non checked exception : RX will call the onError handler for you.
Observable.from(jsonFile).map(new Func1<File, String>() {
@Override public String call(File file) {
try {
return new Gson().toJson(new FileReader(file), Object.class);
} ...
Why doesn't C have unsigned floats?
...If C++ did support it, then you would be sometimes using an unsigned float and not realizing that your performance has just been killed. If C++ supported it then every floating point operation would need to be checked to see if it is signed or not. And for programs that do millions of floating poi...