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Why are Standard iterator ranges [begin, end) instead of [begin, end]?
Why does the Standard define end() as one past the end, instead of at the actual end?
7 Answers
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Inspect element that only appear when other element is mouse overed/entered
...g over the button
Press F8 to freeze the page
Switch to the Elements panel and use the magnifying glass icon in the top left to select the tooltip
If the tooltip shows up because of CSS, here's what you can do in that case:
Step-by-step:
Open the DevTools
Select the triggering element in the d...
Preserve line endings
I run sed to do some substitution on windows and I noticed that it automatically converts line endings to Unix (\n). Is there an option to tell sed to use Windows line endings (\r\n) or even better to preserve the line endings from the file?
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Create a submodule repository from a folder and keep its git commit history
...ations in a particular way. It contains some web demos in a demos folder and one of the demo should now have it's own repository. I would like to create a separate repository for this demo application and make it a subpackage submodule from main repository without losing its commit history.
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Turn Pandas Multi-Index into column
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The reset_index() is a pandas DataFrame method that will transfer index values into the DataFrame as columns. The default setting for the parameter is drop=False (which will keep the index values as columns).
All you have to do add .reset_index(in...
Difference between final static and static final
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@Annotation public protected private static final transient volatile
And for methods:
@Annotation public protected private abstract static final synchronized native strictfp
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impro...
Why is string concatenation faster than array join?
...owsers have also optimized string concatenation, so Safari, Opera, Chrome, and Internet Explorer 8 also show better performance using the plus operator. Internet Explorer prior to version 8 didn’t have such an optimization, and so the array technique is always faster than the plus operator.
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Java 8 Streams: multiple filters vs. complex condition
...re is any difference.
Combining two filter instances creates more objects and hence more delegating code but this can change if you use method references rather than lambda expressions, e.g. replace filter(x -> x.isCool()) by filter(ItemType::isCool). That way you have eliminated the synthetic d...
Difference between Mock / Stub / Spy in Spock test framework
I don't understand the difference between Mock, Stub, and Spy in Spock testing and the tutorials I have been looking at online don't explain them in detail.
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How to trim a file extension from a String in JavaScript?
...u can use x.slice(0, -4) (where 4 is the three characters of the extension and the dot).
If you don't know the length @John Hartsock regex would be the right approach.
If you'd rather not use regular expressions, you can try this (less performant):
filename.split('.').slice(0, -1).join('.')
Not...